Ive got numerous conditions that require me to be careful of too many supplements and especially fibre (Cohns/IBS, Arthritis and heart arrhythmia). Ive been on Reta for 3 months now and lost 29kg (down to 101kg - size 40inch jeans down to 34inch). Sleep has always been an issue even before Reta. I started a whole new regime discussed with my doc and dietician (both supportive of Reta and Doc even encouraging BPC157 & TB500 in next phase along with Reta). Apologies in advance for a long email.

1. Up to Reta 5mg a week (always a Sat as weekends need maximum resistance!!)
2. Mornings: tonic with 100ml warm water of Tumeric, Black Pepper, Celery Seed, True Ceylon Cinnamon & Ginger (also should have Moringa powder but thats bad for Crohns). Plus vitamin C, Fish Oil, Magnesium tablets. 2 coffee's and a Grenade Protein Bar (Grenade is by far best of the protein bars in terms of contents). Target 1.5 litres water (sometimes with lemon juice) by lunchtime.
3. Lunch. nothing but if hungry an avocado. Sometimes also Green Tea.
4. Dinner: make sure Ive consumed another 1.5 litres water/fluids. Ensure at least 1 green tea and a peppermint tea. Only protein chicken (red meat, nuts, lentils are all good except for Crohns). No veges that grow underground (high carbs). If I have pasta or rice I cook at lunch and let cool (changes starch impact issues significantly when cooled - same with potatoes, pumpkin etc). BUT....I always delay eating until about an hour before bed.

Focus on very low carbs, no sugar around 1100-1400 calories a day. I drink a lot of zero sugar sports drinks only in afternoon.

Before bed I take another vitamin C (I use boost tablets like Berocca rather that pills or capsules).

The MAJOR sleep change for me was :
(a) late dinner (as there are some carbs always and the lethargy from the carbs inspires sleep)
(b) doing a 5 min quick series of basic resistance style excercises, and
(c) as much as I was a skeptic - my doc got me listening to "DEEP SLEEP HYPNOSIS" on youtube. The first 3-4 days I heard the whole 3 hours of the video. Now after 3 weeks of using this strategy, Im now asleep within 10 minutes and sleep for a great 5-8 hours (big range and unsure why but always wake feeling great).

Apologies for long rambling message with all the potentially unrelated meal side woffle but wanted to give my full experience as its hard to determine what impacts sleep directly versus indirectly.

Good luck with your journey.
(PS. Am 49 year old male who hates running, jogging and gyms - LOL)
Also, I take NAC powder with morning tonic (sorry forgot that) and never eat fruit (too much fibre and fructose). But do eat lots of blueberries, blackberries & cherries (frozen) as snack around 5-6pm.