Video games

How do I communicate to my husband that his obsession with video games is too much. He likes it and it's his hobby and his way to destress when stuff isn't going great. But it's excessive to where on his days off. He's on it 24/7 and takes small breaks. We really needed to go talk to our sons preschool together today and he knew that and he stayed up until 4 am and we didn't. I can do it myself but then he asks why I didn't do this or say that. Then he has the nerve to be grumpy and mad at me for trying to wake him up because he said he was going to wake up even if he went to sleep late. Then he said I'm too tired let's go tomorrow and that we'd go costco a little bit later. I asked him if he wanted me to just go and he said no. He wanted for us to go together so there I go again. I waited a good long while to where he got a good sleep in and this is the only time because after a certain time there's stuff I have to take care of and he has to go back to work. So then he complains and said he's been woken up twice. He asked me to. And this has happened before I'm pregnant and was sick one day and he said he'd take our son to an appointment and he stayed up late and then was grumpy and couldn't wake up and I had to. I've spoken to him about this and I let him know to not get upset with me and he says ok and still does. Im sorry you stay up and have to wake up. Then he expects me to wait really late or whenever he's done with his game to spend time with him and I'm busy or tired. It goes both ways and I don't know how to talk to him because I have and it isn't working.