Many brides ask for timeline help, not knowing how many hours to schedule for photos, family photos, downtime…etc.
Since I am here to capture the day as it happens, and the day is about far more than photos, I would never require an amount of “photoshoot” time scheduled! However if you are hoping for a great selection of portraits as many clients do, I would encourage 30 minutes minimum allotted to time with just the bride and groom and then 30 minutes minimum allotted for the entire bridal party!
Family photos take about 15-20 minutes, on average! (really big or really small families may require more/less of course!)
Here are a few example timelines of common wedding day layouts. I hope this helps your planning in some way!