Advice on Husband

My husband and I have been together forever and have a 3 year old son. Within the year or so he has been playing poker on an app on his phone (not for real money) which almost makes it even stupider. Anyway, this game had become addicting for him and he will literally stay up until 4 a.m. playing which makes him spend the next day sleeping all day. He uninstalled the game for about 2 weeks and has reinstalled it again. He played last night and at 3:30 am he was still at it. I wouldn't mind him playing if he could wake up and function the next day but the problem is he can't. This not only makes me act as single parent a lot of the time but it takes away time he spends with our son. I want my family but I am at my wits end with this nonsense. I literally do practically everything as it is and this scenario just makes it worse. He constantly apologizes but his behaviors also revert back. We've tried therapy a couple sessions but the main issue is his addiction to the game. Now I don't trust him and it causes me anxiety. We also had a miscarriage in November have been trying again to conceive. I don't know what to do anymore.