Three months out, the jobs range from a quick 1-sentence email to a vendor to a stack of invitations that need weighing, stamping and mailing, so the order of the jobs matters more than any single one.
The rule that sorts them is the vendor’s deadline: anything a caterer or seamstress needs from you before they can start, such as the menu choice or the fitting appointments, goes first.
Decorations and music can wait, and the seating chart has to wait until RSVPs close.
1. Mail Invitations
Invitations should hit the mail about 3 months out, and a themed suite like a passport design takes longer to assemble, so finish and stamp it early.
Put one fully assembled invitation on a postal scale at the post office, then buy all the stamps.
Charms and thick card stock can push the postage up, and mailing a single test piece costs less than a surprise at the counter.
Keep your guest list spreadsheet open and mark each address as you seal it.
2. Wedding Menu
Settle the menu now, because your caterer needs a final choice before they can order food and staff the event.
A buffet suits a tight budget, since guests serve themselves and you pay for fewer servers than a plated dinner needs. I would pick two proteins and one rice or starch dish over a long line of forgettable options.
Ask the caterer for a tasting, and ask what they do about vegetarian and allergy requests. Collect those from your RSVPs and pass them along.
3. Reception Seating Chart
An alphabetical chart is the easiest layout for guests to scan, and with a large crowd I would choose it over a table-by-table list. Guests find their name in seconds and the line moves.
Build the draft in a spreadsheet, then adjust as RSVPs trickle in. Seat people who know each other together, and keep anyone with tension far apart.
Hold the final version until replies close, then send it to the printer.
4. Wedding Dress Fitting
Book your fitting appointments now, since most dresses need 1–2 fittings and alterations take time.
Wear the shoes you plan to walk in, and bring the undergarments you will wear that day, because both change how a hem and bodice sit.
Lace can be fiddly to take in, so ask the seamstress what she needs and how long the work will take.
Bring one honest friend, not five. Too many opinions slow the whole appointment.
5. Wedding Ceremony and Reception Music
A live band brings a dance floor to life but costs more than a playlist, so decide where your budget leans. A DJ or a playlist is the cheaper route.
Either way, put a short list on paper: the processional song, the first dance, plus a handful of songs that must play and a few that never should. Hand it to whoever runs the music.
Confirm the sound setup for both the ceremony and the reception with your venue.
6. Hair and Makeup Trials
Book the trial for a day when you can see the result in daylight, since your wedding photos will rely on how it looks in real light.
Bring a photo or two of the style you want, and wear a top that you can easily get out of. If the hair is wavy and loose, ask the stylist how long it holds and whether it needs touch-ups.
I would schedule the trial well before the wedding, so you have room to change your mind about the look.
7. DIY Wedding Decorations
Small glass vases are a forgiving way to decorate yourself, because each one holds only a few stems and no arrangement has to be perfect.
Mixing colors, like the orange and blue flowers here, makes a loose, collected look that suits a hedge-lined outdoor table.
A single large rose in one vase gives the group a focal point.
Set everything out on a white surface at home and test the grouping before the day. At 3 months out, that is also the time to count how many vases you need per table.
Importance of a Timeline
A timeline breaks a huge job into milestones, so you book vendors before their dates fill, spread the spending over months, and skip the rushed decisions that cost extra.
Start the day-of schedule now, even if it is a rough sketch.
Write it as a list of clock times, from hair and makeup through the ceremony, photos, dinner, toasts and the last song, then add to it as each vendor confirms.
Send the same copy to every vendor. When the photographer, caterer, DJ and venue all work from one document, nobody is guessing when the cake gets cut or when the band loads out.
Pick one person to hold the schedule on the day, and it should not be you.
Managing RSVPs
Digital RSVPs are worth a hard look if your timeline is tight. Over 70% of couples working on a condensed schedule use digital RSVP tools, and I understand why: replies arrive instantly, and meal choices come in with the answer.
Give guests about 3 weeks to answer, and put that cutoff date right on your wedding website. That gives you time to finalize the seating chart and send the caterer a firm headcount early in month two.
Printed invitations look and feel better, but between the print shop and the mail carrier they eat up several weeks you may not have.
If a physical invitation matters to you, send it and still point guests to the website to reply.
Chase late repliers by text the day after the deadline.
Vendor Communication
Put every vendor on a regular check-in schedule instead of waiting for problems to surface.
A short email every few weeks, asking them to confirm the date, time, and what they are delivering, catches mistakes while they are cheap to fix.
Keep one shared folder with contracts, contact numbers, and the latest timeline. Write down every change in an email, even if it was agreed by phone, so you have a record.
In the final week, confirm arrival times and the name of an on-site contact for each vendor. Give that list to your point person so questions never reach you.
Frequently Asked Questions
What should I do three months before my wedding?
Mail the invitations, settle the menu with your caterer, and book dress fittings, since most dresses need 1–2 rounds of alterations.
A hair and makeup trial belongs on the calendar now, along with a first-draft seating chart and a rough day-of timeline that lists who is where and when.
A quick call or email to each vendor every couple of weeks lets me catch a wrong date or a missing item while the fix still costs nothing.
What is the 30-5 rule for weddings?
I can’t back that rule with a source, so I’d go by a longer lead time. Invitations should go in the mail about 3 months out, and guests should get about 3 weeks to reply.
What are the steps involved in a complete wedding planning checklist?
At the 3-month mark, the steps are mailing invitations, locking in the menu, fitting the dress, trialing hair and makeup, and planning the music.
Add the seating chart, any DIY decor, RSVP tracking, and a vendor check-in schedule. A day-of timeline ties them together, so every vendor works from the same copy.
What should I include on my wedding purchase list?
Include shoes and accessories early, since you should wear your actual shoes to dress fittings so the hem is tailored right.
Before buying stamps, I would take one finished invitation, with every insert, to the post office and have it weighed, since a charm or heavy card stock can push it into a higher rate.
If you are decorating yourself, count the vases you need per table.
