Planned back from your launch date: start 6 days before launch.
Day 1 (6 days before): you send the date, a screenshot of each step in the flow (or a screen recording), your logo and colors, and any videos you like.
Day 2 (5 days before): the script and 1 style frame, drawn from your own screens.
Day 3 (4 days before): you approve or redirect, we build, and you get a checked preview, then the final 1080p film and cover frame.
3 to 2 days before: unlimited revisions until you're happy.
1 day before: spare day. Then you post.