TTC without actively involving my partner

So my husband and I are TTC, however he is anxiety prone. That being said, although he wants a baby, he doesn’t actively want to be involved in the trying process (testing, knowing when I’m fertile, etc.) because it puts too much pressure on him to perform. I 100% get it. However, I have endometriosis so tracking is necessary to even think about getting pregnant.

How would you initiate sex on days that you’re fertile without really letting him know that those are your fertile days?

We don’t have sex a ton so initiating too often would give it away.