My boyfriend has low sex drive :(

I’ve been with my boyfriend for 9 months now & sex was reaaaaaal good in the beginning but it started to die down 2 months ago... I’m a very sexual girl, having sex makes me feel so much closer to him and I feel 100% loved.

Lately we’ve been having different work schedules and usually just see each other before I work briefly then I go to his around 11 and stay the night. Now a days I initiate sex which I’m not really into and I’m starting to do it less and less because I hate the feeling of rejection which almost always happens. His excuse is ohh I’m so tired and blames it on him being a morning person, but even if we’re together all day we still don’t have sex. I feel so unattractive and rejected I usually end up leaving his place pretty upset..