I had the same feeling but like much else in life it turned out to be adaptable. I find similar feelings from mornings while the world is asleep.

As someone else mentioned, if I camped without artificial light I would get tired at eight. So I switched my evening routine to only use lamps, created a wind down routine, and now I get sleepy around ten and don’t feel good if I stay up.

Feel free to stick with your schedule. But if it is causing you trouble you are probably more adaptable than you think.