Hello and welcome to SR.
This early in the game and you're concerned. I've been down your path. I married my A. Had a child with her. Bought a house. Gave everything I could because I thought she'd grow up or I could help her realize what her problems are and how to fix it.
I was wrong. I lost myself. I've seen a lawyer recently. If I need to, I will divorce her.
My point is that things get far more complicated the longer you stick around. I'm not telling you to leave but that is no way to live. I try to let everyone in similar shoes know that you have a bright future in front of you, so long as you don't let yourself get sucked in any further.
Al-Anon is a pretty standard suggestion. I've also read a book called Codependent No more by Melody Bettie.
Keep posting and keep writing. It helps clear the fog.