I don't know if it's your case, but I feel overtired when I don't sleep well and these last few weeks I feel like I don't rest. Today I decided to go to bed early and try to sleep comfortably, when I do I feel great. I don't know if you take magnesium, it helps me a lot.
Much success in your first experience as a DJ in an event, when you work on something you are passionate about it doesn't feel like work.

Best regards.