I'm a night owl living on a 9-5 schedule, and I have the same problem. Most of the day I'm a little tired, then at night I get a burst of energy. It's frustrating. I think the ideal solution would be to find a good job that lets me work my ideal hours, but barring that I've found a useful strategy. After my wife goes to bed, I'll go downstairs for an hour or two and read, write, and think. By letting my brain burn off some of its energy, I find myself naturally drifting into a healthy calm tired. I'm never exactly wiped to the point where I can just fall asleep, but I calm down enough that I can still get to sleep at a semi-decent hour. Combined with WFH I actually get close to 8.5 hours by sleeping in later, so it's not bad.