Partner has Low libido (sex drive) what to do?

Background - Hi all, my man has never had a high sex drive, at least when comparing it to mine. I’ve always been the one to have the high sex drive and initiate foreplay. I love being sexy and kinky and he loves it but he’s more submissive. He would get turned on instantly though. Basically He goes along with whatever I want and do.

I’m currently 6 months pregnant and slowly our sex life has been slowing down and now it’s to the point were We both are bored and I’m tired and he’s like letting me rest but I still want sex! I’ll want it at least once a week. But the last few times I’ve noticed he’s just doing it for me, and he can’t lie cause he has trouble getting erect. I asked him and I think he feels he might hurt me or the baby, But he knows that’s not possible. I am just looking for ways to get him hard as he used to get and what kind of things you guys do to get him turned on ?!! I used to not have a problem getting him turned on it was instantly but now he’s so lazy and he doesn’t even look like he enjoys it. 🙄 TIA