My boyfriend thinks the main thing in a relationship is sex

So my boyfriend all’s he thinks or cares about is sex when we’re not having sex he is either on his phone or Xbox ignoring me but as soon as he wants something he never leaves me alone. He recently threatened to breakup with me because he said he’s not getting enough excitement when we’re apart we only see each other a few times a month due to distance. He said I should be sending nudes everyday or sexting him and making him excited to see me. I work full time 12 hour shifts and half of the time I’m exhausted I don’t have time to be doing all this aswell as do things I wanna do work cook and everything else but he is so needy