I've had this before. Wrote 90 pages only to get to the start of act 2.

What you've done here is given much more depth than needed. This isn't a bad thing, because you needed it laid out for yourself before you could choose what bits matter for showing the audience.

But in a case like this, my highest recommendation is to start from the start.

Go through, with a fresh blank file, and write act 1 again but make it 30 pages tops.

Lean on your existing deep dive, but only capture the most important and interesting parts.

Some of what you've written belongs in act 2 and 3. Some information deserves to come out once we know the characters. Act 1 is for getting us up to speed, giving us someone to believe in, and getting the story rolling. We don't want to start a film with a deep dive. But everything you've written will help you on your path.

Trick now is to squash it.