Need advice.

So my husband has always been a night owl. Staying up til 2 am some nights, but then up and off to work while I stated home with our son. He was recently injured on the job and is out for a while. He now stays up til 3 , 45 am then sleeps till noon or later. Our son naps 12-3 so he misses much of his day not to mention I don't get extra help. I'm 17 weeks.

When I mention it he gets mad saying I go to bed earlier. My concern is this may be long term him out of work. I worry about when the new baby comes.

How do I bring this up with causing a drama he gets all pissed every time I do. I have even tried explaining hus son is only this age once and spend time with him. Yet he still does it. Is it me or is this just not fair??