" learning for the first time despite being 30 years old about adult life/responsibility/career/bills/housework"
I'm sure my immediate loved ones very much related to your current position. I'm on 11 months. Mom referred to me as Peter Pan for a while. I only got it recently. Just know it does take time. Does he have a program? He needs to practice new behaviors that will become automatic. The rule of thumb that really makes sense to me now is that things really start getting better ar about the year mark. Congratulations to you both in general and specifically for the new child!