Husband’s sex drive WAY down

So since the beginning of our marriage, my hubby always had the higher sex drive than me. Now that we’re TTC, his sex drive dropped dramatically.

It’s not that he’s burning out, because we’re not having sex every single day. He does get tired from long hours work, but that hasn’t stopped him before.

I track my OPK and everytime I feel like it might be a positive and tell him, he would literally get upset like “noo we just had sex yesterday”

And it’s not that he doesn’t want kids because he does. And every night he would say I’m tired and falls asleep, unless I literally force him. And then that just feels degrading and not sexy anymore...

Helppp has anyone experienced that with their SO when TTC?