I used to be a frequent poster when I was a step mother(I finally left my now ex husband and havent looked back.

Ok so here's my question:

I am living in another state of our 7 month old. Up until this point he has shown no interest in her, unfortunately. He wants me to move back there so he can start having a relationship w her and not have to drive 6 hours to see her. Now, I am all for this. But his parents have an in when it comes to the court system in his state, which is why I moved. He works 80+ hours a week but w their connections I wouldn't doubt that he'd be able to get custody. He has offered to sign something saying that he won't try to take custody but we both know that no such document can actually hold up in court. Thoughts? Thank you!