Been extremely tired lately. Not sure whats going on but its affecting my schoolwork/ability to engage women. I recently adjusted to going to sleep at 10pm and waking up at 7 in hopes of feeling better but I still feel tired all the time. Literally no point in the day am I able to feel alert and focus on what I need to do for longer than 20ish minutes. Tips on having more energy?

I lift 4 days a week, swim the other 3 days. Healthy low sugar diet, no caffeine, no alcohol or stimulants of any kind. Walk to and from school.