Wow.....bitch.
If you haven't reported yet, I think you need to figure out if you're ready to start UPT or not. You need to go into UPT with a clear head. If you need a couple months to get your shit together, you may want to mention it to whoever your supervisor is when you report in. Once you're checked-in, it is possible for them to roll you a class or two if you need the time to get things in order. If you're just now separating from your wife, those are definitely circumstances that people would be willing to work with you on.
If you think you're good to go, then start looking for child care and press on.
HD