I used to be someone to hibernate also. Bed at 2am, wake up at 11am-2pm. I loved my beauty sleep. I also felt that I made less mistakes during the day.
Then came responsibility. Due to unexpected events which life brings, I had to start waking up at 9am every morning. The first week was HORRIBLE. After the first week It was getting easier. After a month, I found myself automatically waking up between 8-9am without an alarm clock. I started feeling so damn good in the morning. Much better than how I felt waking up past noon.
Looking back, I am so happy I am no longer sleeping extensive hours. I was always told its good to have a steady sleep schedule. go to bed before midnight and not to over sleep but I always ignored it. Now that I am going to bed around midnight (sometimes 1am), and waking up at 9am, I found that my energy levels are much higher, and my brain functions much better throughout the entire day. I will never go back to hibernating. I have found that 6-8 hours works best for me. Anything more than that, I am a zombie for the first part of the day.
I encourage you to give it a shot. Just know it will take a week or so to get your body used to it. I promise that you will thank me later
BONUS: Once you start waking up early, you wont miss McDonalds breakfast anymore