I almost said "then how come you aren't going to meetings then". But I didn't ! I am reading Steve Hassans book and I understand about cognitive dissonance.
I left the JW's by fading away, but my wife remains active. I often want to point out hypocrisy where the wife is a weak witness, but it would only make her try harder to show me that the weakness was a mistake, and then she would overcome it. I don't want to make her a better witness by pointing out that she is not a good witness.
Otherwise, I fully agree with john.prestor on page 1. Enjoy your child's birthday. Don't wait it out entirely for the sake of your husband, let the children start enjoying things properly, but do it in a way that will help your husband see what joy you had.