Experience the same, have water fasted 5 days before and doing it twice a year. Three options here
1. Accept you will seemingly need less sleep and go to bed later, use any sleepless time in bed as an opportunity to read and meditate.
2. Be extra careful with sleep hygiene.
3. Use hot then ice cold showers before bed, and possibly sleep aids spanning from 1 mg melatonin to 7.5 mg doxylamine (very safe, but gives you a hangover due to long half-life, maybe not so bad if you feel too wired) to benzodiazepines or hypnotics like ambien (shorter half-lifes, more effective, ideally with assistance from a doctor).
Some argue that sleeping less is a good stress during a fast, but I haven't seen any good evidence to support that.
1. Accept you will seemingly need less sleep and go to bed later, use any sleepless time in bed as an opportunity to read and meditate.
2. Be extra careful with sleep hygiene.
3. Use hot then ice cold showers before bed, and possibly sleep aids spanning from 1 mg melatonin to 7.5 mg doxylamine (very safe, but gives you a hangover due to long half-life, maybe not so bad if you feel too wired) to benzodiazepines or hypnotics like ambien (shorter half-lifes, more effective, ideally with assistance from a doctor).
Some argue that sleeping less is a good stress during a fast, but I haven't seen any good evidence to support that.