I have definitely one and it really helps me a lot also in dealing with the autoimmune disease.
The night is mostly for preparation and doing things offline as much as I can. Trying to avoid blue light. Like preparing the food and smoothies for the next day.
Also the evening meditation before going to bed. That also really helps me with the bruxism I think due to leaving less for the brain to process while sleeping & dreaming.
Mapping my top 3 priorities for the next day helps me to focus on them easier and get things done.
Some brainstorming and thinking about my numero uno goal or problem that I try to solve before going to bed, primes up my mind.
The most important rule is to go to bed at least 7 (or better 8) hours before the intended wake up time.