Hubby- in or out?

So we are trying for #3- I say we loosely. My hubby is at the point where if we get pregnant then great, but only if it’s meant to be. I, on the other hand, have taken to opks, prenatal vitamins, fertility blend vitamins, mucinex, two fertility apps. I don’t exactly want him to know how obsessed I am about it, but at the same time I’m so frustrated because I’m lucky if we BD once in my fertile window. He is turning 35 soon and his sex drive has gone down to where we BD once every 4-5 days. I’ve talked to him about what I can do to help and he said basically I need to condition him to bd more.