If that’s the case, in your position, I’d probably grit my teeth and do it in Word,
I’ve been doing a lot of stuff in Typst (in their excellent web app for the moment), which could probably do all you want. I am not a coder and was in the humanities (albeit linguistics and translation), but I have found it pretty approachable, but you’d still have to take time getting to grips with it. Tables are pretty straightforward; I don’t know about figures… leave alone the sort of figures that you use.
If you want to try it, @nontroppo set up Scrivener templates for Pandoc –> Typst, and another for pure Typst. Check this thread:
And come back here for further help/advice!
Mark