Regarding all your exposition, see if you can let your exposition “walk and chew gum at the same time,” so to speak. That is, if a scene is only designed to provide exposition on X, see if you can make the scene do double duty, or triple duty, and provide exposition on Y and Z as well.
The conversations feel real. The situations feel real. The characters are alive. The story, or at least the first part of it, is clearly about a man about to be unfaithful with his wife. This is a good hook to pull readers in with. See if you can get to it a bit faster while still setting up the marriage and the kid.
The script has texture and realism. Now it just needs presentability. There’s a good conflict being set up. I’m aboard. Honestly, I like the story so far. Now I want to trust the writer more though. The pages can’t be such a chore do digest. Fix the typos which means less typos, more professional presentation. Don’t give them an excuse to put it down.