What to do about my SO?

Teja

He's been really off with me which I can accept. Lately he's been stressed out at work, indulging in sweet cakes constantly (I told him to be careful of diabetics and he wasn't bothered). I've confronted him and he talks in riddles and walks off. From what I could make out he said there's alot frustrating him, I asked if it's about me and if he wants to talk about it and he said ' it's everything' and then walked off. What's upsetting me is the fact he hasn't interacted with our daughter in three days, no good morning, goodbye Not a word. My heart hurts.. She needs us now more than anything with her big surgery coming up and he's here sulking :(