sex anxiety in my [23F] LONG term relationship [24M]

me [23F] and my partner [24M] have been dating for five years. at first our sex life was constant, but after 3 years, it died down. He’s always lasted way longer than me in bed and i find myself getting worked up with the idea of having to take that long in bed (a crazy complaint i know..) but we work very different schedules, im usually up at 5am for work, and he works later shifts, which makes a nighttime session harder for me, because im worried about getting enough sleep! equally, he’s not going to be able to get up early enough in the morning haha…
we have an intimate relationship, neither of us are not “sexually dissatisfied”, but the actual act of penetrative sex only really happens every 6 weeks if i’m being honest. it’s embarrassing to admit to anyone, and the longer it goes the more i find myself experiencing anxiety at the thought of having sex - and when we do, it’s amazing and beautiful ! and we always say why don’t we do this all day everyday hahaha.

i love this man deeply and i am so attracted to him, but im worried that this abnormal sex situation is going to cause a rift in our relationship. does anyone else have similar experiences ??

tldr is sex every 1-2 months a problem?