you are not married, are you? that's not how this works. while they certainly need to talk, and not just once, but continuously, you don't have the authority to change your partners behavior. you need to discuss your feelings about this matter and come to a consensus about the activities and the goals for your child.

it won't be easy. if i were in this position, i can't imagine what i would do. i feel even stronger than GP about this, and i'd probably feel quite helpless trying to get my partner to understand how i feel about this. even just trying to get my voice heard. if you don't have a way to communicate openly in your marriage from the start, then talking about things openly can be very hard, seemingly impossible even. with one issue that my wife and me had, it first took me years to notice and understand the issue and start to speak up about it, then it took a few more years for my wife to recognize and acknowledge the issue for herself, and then she still struggled to do something about it. and very time i messed up somewhere in our relationship, it was a setback for her development too. and i can't even blame her. it's something she learned from her parents (which is how she eventually figured it out)

Let us know how his divorce goes.