I think I just feel abit deflated that he gets in from work at 5.15 gets fed his tea and doesn’t move off sofa till bed time.
Meanwhile I make sure tea is ready everyday, I make his lunch everyday, I do all washing cleaning ironing household jobs, I cut the grass and maintain the garden, I walk the dog everyday- somedays if I haven’t had chance during the day I have to wait till baby is in bed and take him then which is my biggest annoyance- I know DP will want to ‘ chill ‘
DS4 wakes up about 7.30, so I’m always up before him, make his breakfast etc and I take him nursery when he’s in
Holy crap - this is your second child.
There is absolutely no excuse for your H not to be up taking care of DS4 so you have a chance to get ready for your day. No way should he be lying in while you are dealing with the older child.
Your H is taking the piss massively.
He needs to do the garden and he needs to walk the dog every evening, and a grown man can make his own lunch, give a bath and put the older child to bed, and clean up the kitchen in the evening too.
He sits on the couch watching you work all evening, watching you take the dog out for the evening walk, knowing you were up before him in the morning. Outrageous.
And poor diddums gets home at 5.15 
There are men who get home at 8 who then roll up their sleeves and muck in. Your H is a lazy, entitled sod.