Fix your sleep. I am tired of people like this. I have a Forrest Gump like colleague who calls me at 9pm asking me about a meeting we had at 9am (he was there and said yes to everything)
What? Your colleague sounds like they may be struggling with some serious cognitive issues, they may want to see a doctor about that. As for me, I’ve been living with my brain my entire life, and have kept several different sleep schedules in that time, for one reason or another, including rigid adherence to a schedule you would certainly approve of, and at no time has the basic fact that my brain works better later in the day ever changed. Some people never learn that their own circumstances and experience are not universal. Maybe try not to be one of those people.