Re K1 He was like this during my last pregnancy too Karen, that is what I thought when BB was PG. I sort of wanted kids and sort of was wanting to avoid the extra responsibilities. could I be a good dad. Would my income be enough and so on.
Once she was PG there isn't any more to worry about. The die is cast and BB couldn't get PG on top of being PG so it was like bonus time. Something like an "all you can eat pass" to a buffet to a hungry teenage guy.
You say your H adores babies. Well I think, and I really don't know, he also thinks about taking on more responsibility and that unconsciously hinders his SD when you are not PG.
I am not saying I know what your H thinks, just saying that is what went on in my mind back in the potential getting PG days.
Anyway, WTG on the sex, the romance, and best wishes with the pregnancy.