How do I get his libido back up?

My boyfriend and I have been together for 2 years. We live in separate cities and we've managed to go through this relative long distance for the past 2 years. He resigned from his previous job to try to move into my city, also to get away from how congested and polluted his city is considering it's the capital.

He wasn't able to find a job here after looking for a year and I'm worried that's putting a strain in our relationship, and not to mention our sex life.

We used to go at it any time we can. we'd even resort to doing it in his car, luckily it's heavily tinted so 😉

Other times, he'd stay over at my apartment on some weekends. Our record was 8 times in one day, during the first few months we were going at it. But lately we havent been going at it as much-

I've tried dressing up, and going on romantic dates with him. I asked him straight up last night if he wasn't as interested anymore, and he said he still was but he had to drive back home and he didnt want to feel sleepy afterwards.

We haven't done it in a month and a half already and I'm just wondering what can I do to improve the situation without either of us moving into the other's city because I'm currently studying university here so it's difficult for me to uproot my life also.