Aww! Don’t stress too much. I worried about getting my timeline exactly right, and honestly, day of, I have no idea if we stuck to it or not!!! The main times that matter are before the ceremony; the reception you should have an idea of when to do cake cutting, toasts, first dance etc, but to a certain extent it will just flow. Work backwards from the ceremony to figure out getting ready time, and if you know your reception start and finish times, start plugging things like dinner, toasts, cake cutting, first dance, open dancing, and move them around until they seem reasonable. There’s no hard and fast rules, but lots of examples online.
Are you using hair and makeup people or doing your own? They will know how long they need to get you ready. Getting actually dressed doesn’t take long, and you’ll have an idea of how long it takes after doing your dress fittings.
As far as how long for photos, are you doing a first look or doing all photos after the ceremony? Guests will presumably be at some type of cocktail hour when you do the post-wedding formal shots? How long it takes depends on how big your families and bridal parties are, any extra/posed couple shots you want, etc. I’d talk to your photographer about how long they need.
I also did a timeline for the day before for rehearsal, rehearsal dinner, etc., partially because our location was an hour away.
Mine, for an example:
Brunch with bridesmaids: 11am-12pm
Leave for location: by 12.30pm
Arrive location: by 1.30pm
Makeup/hair/get dressed: 1.45-3pm
Photos (separate): 3pm-3.45pm
Guests arrive: 3.30pm-4pm
Dinner (buffet): 6pm-7pm
First dance: 7.15pm
Cake cutting: 8.15pm
Last dance: 9.50
Bride and Groom depart: 10pm
However, as I said, I have no idea if it actually went like that. I think the toasts were a bit later and the cake cutting was a bit earlier. The photos also didn’t take the whole cocktail hour, so we were able to mingle with guests and enjoy the hors d’oeuvres and drinks 🙂