Hey, that's great. Best just to let him figure out things himself, don't pressure him or question him, just let him do what he feels and make plans to do fun things at the weekend.
My husband seems to be doing similar to yours - still says he believes its the truth yet says that he doesn't know if God exists or not. He says that he plans to go to meetings on his own and will take the children on Sundays but he rarely ever goes, last Sunday was my last meeting and he hasn't been back since either, he never goes in field ministry and makes excuses to do something else and declined a shepherding visit last week. He is confused, poor soul but I do have good hopes that he will stop soon too because he doesn't have the motivation to continue on his own.
It makes it so much easier for you both that your families aren't in the 'truth' so they'll be a good support for you both :) x