Lots of other posts have covered concerns about your DH's lack of parenting skills but I wanted to pick up on something you said a couple of times about care of the baby:
"I want to do things my way"
"I want things to be done properly"
IME the couples whose relationships took the most battering following the birth of their baby operated exactly this way:
A Mum who insisted that there was only one right way to do everything.
A Dad who stood back, felt excluded and allowed himself to be infantilised.
We have twins and I wasn't very well after their birth so my DH was extremely hands on. Did he change nappies, bath them etc exactly how I would have done? No he didn't. Did it make a blind bit of difference? No.
If you push your DH out of the way so that you can do things "properly" he won't develop the skills he needs to care for his child. He'll feel incompetent and then won't want to care for his child alone.
And you'll end up in a few years with a useless father that doesn't know how to care for his child.
Which is apparently exactly what happened with his ex.
The only thing a father can't do is breastfeed. But other than that he should be learning to do everything! Changing, bathing, winding, playing, settling down at night.
I can't emphasise enough how much you are making a rod for your own back if he isn't involved with every aspect of his son's care.
Pushing him out of the way because he's not doing the nappy "properly" leads directly to a father that "doesn't know how to discipline his children".
Don't let history repeat itself.