Idk if I’m sexually attracted to me SO anymore...

I’m not sure the reason why but I haven’t been sexually active with him lately. Idk why I’m not sure if it’s a temporary thing or not but it’s been happening for a while. We have been together 3 years and have a daughter who’s a little over 1. I’m not sure what to do. I love him and want a future with him but how can I do that without having to force myself to feel like I HAVE to make myself be intimate. He sent me a message saying he wants me to sleep with my legs open lol so he can “let me know when he’s home” and I felt almost nervous. Like uncomfortable and shy almost like it was weird and idk what to do I used to love that. Any advice ?