How to get DH to do what I ask without losing my gd mind?

So one week down, and DH is trying and being a big help. That being said, he continuously thinks the things I tell him are “suggestions”?! I don’t know what else to say. And these things are dangerous. For example: I’ve said more than once, LO needs to sleep in a swaddle period. And I’ve explained why. He does the 3 am feed and she’s in the swaddle and a blanket??!??? It’s 6 am and I want to drag him out of bed and scream but I know he’s not trying to put the baby at risk.

There is other smaller stuff too, like putting uncapped breast milk in the fridge, leaving wet things in the sterilizer etc.

How do I get him to do these things without losing my temper?