What I've found has helped me to change patterns is to pull an all nighter, then go to sleep at the target time. Its worked for me a few times, until I slowly d

What I've found has helped me to change patterns is to pull an all nighter, then go to sleep at the target time. Its worked for me a few times, until I slowly drift out of sync (I'm definitely not an inherent morning person). May not work for everyone...