Lately I'm trying to avoid being a "night owl" because I think it's affecting my short but also long term memory. I can't often remember things that I deem simp

Lately I'm trying to avoid being a "night owl" because I think it's affecting my short but also long term memory. I can't often remember things that I deem simple, like, "who's the lead singer of a band that I love" or I can have a more than normal difficult to remember the name of a colleague. Or maybe it's my brain developing some Alzheimer like disease. I'm 36