Keeping intimacy alive long distance

I’ve been separated from my partner for 2 months due to Covid 19 and it looks like it’s going to be another month still before the airlines can fly him back. Our sex life was in trouble before we got separated but now it’s not even a conversation, we speak 3 times per day and it’s very loving but there is no mention of sex at all, which feels unnatural to me. However, I don’t know how to bring it up and how to ignite some feeling of intimacy long distance with someone who doesn’t seem to want to talk about it at all. He says when we see each other again we will deal with it.