It seems that he is drowning in guilt, depression, work. I think it is important that you don't stop doing the "on purpose" connecting. Though it is not how you want it, you both need it. I know you don't want to save him per se but you can be his guiding light. Keep finding joy in your life and making it how you want it.
hugs, kat
Me-53(and learning!) S24, S21, D18, D17 Just keep swimming, Just keep swimming. Dory