Need some advice

I’m currently on my first round of Letrozole and my OB said to make sure we are BD every 2-3 days max... I’m really trying to not make BD seem like “a scheduled job” so I’m wearing sexy outfits, trying to be spontaneous and lovey... of coarse us girls are usually the ones keeping track of how often and I’m doing so on this app so he doesn’t feel anymore pressure. However we are on day 3 now of not and he’s just so not in the mood.... I don’t want to be taking fertility meds and blood work all the time if he’s not willing to be more “diligent” on the only part he has to do lol. Any advice on what I can do to keep us on track without stressing him out or getting him in the mood more often????