I suffer from the same problem, if problem it can be called, it's just a different sleep pattern. I learned to live with it mostly. I wake up at 3 am and there

I suffer from the same problem, if problem it can be called, it's just a different sleep pattern. I learned to live with it mostly. I wake up at 3 am and there is no way I fall asleep again before 1.5-2 hours. I just get up and do something productive, usually I'm quite creative at those hours and the silence is amazing. The problem is that modern society isn't that nice with these uncommon sleep patterns, it's hugely problematic if you still need to wake up at something like 6 or 7 am. I've read in the past that this is actually an ancestral pattern and that 7-8 hours of continuous sleep is something imposed to us with the industrial age.