Its a big big subject! Are you volunteering to do the summary document?
First thing is that Adrenal Fatigue is a HUGE misnomer. Adrenal dysfunction would be a better description. In the vast majority of cases the adrenals themselves are working fine, and its the control mechanism that is faulty - for a variety of reasons. That is why docs do the ACTH test, which measures the ability to produce cortisol, and pronounces the patient fine!
Things that have worked for me, in no particular order
1)Magnesium supplementation. Our diets tend to be low to deficient in Mg nowadays, with various estimates as to the number of people low in Mg. You need to take it in quite large amounts, and with it's co-factors, vitamin B6, wholefood vitamin C, a general B vitamin, vitamin A in cod liver oil. I didn't notice any dramatic improvement, but I did notice that I went downhill when I stopped for a while.
2) Ashwaghandha (in the evening) and rhodiola root (in the morning) are useful adaptogens. The really helped regulate my sleep patterns. I haven't tried Holy Basil or Seriphos, but both are supposed to help sleep.
3 Going to bed early, when you start to feel sleepy, rather than waiting for your second wind and then struggling to sleep is a useful technique. Accept that in the early stages you are likely to wake in the night, and possibly be awake for quite a long time. I started off going to be around 9.00, nowadays I can last until 10.30 (I used to be a night owl!)
4) Kick the sugar habit. Once I did it I realised the extent to which sugar had been upsetting my sleep cycle. This means all sweet stuff, you cannot substitute sugar with fruit. And in my case I couldn't use sweeteners either. Kicking sugar out has been a 20 year losing battle. Making sure I eat a high protein breakfast has been part of the battle. A bit of milk on your cereal, or a pot of yoghurt is nowhere near enough. Aim for 25 grams of protein (ie 4 eggs or equivalent) then look at number 5.
5) I have found the Adrenal Reset Diet (book by Dr Alan Christiansen) really very helpful. Before that I was eating paleo, but adding small amounts of strategically chosen carbs has helped sleep, and helped me kick the sugar out. A while back I was also doing intermittent fasting, and then struggling to sleep on fast days. Don't bother, intermittent fasting is for people who have no cortisol issues!
6) As part of the Adrenal Reset Diet you are supposed to use a light box, or get out in the sunshine within an hour of waking in the morning (in England????). I already had a lightbox, but invested in a Valkee which uses light therapy via the ears. I left it behind by mistake when we went away last weekend, so missed 4 days and couldn't understand why I was suddenly so tired! Two days using it again and I was so much brighter!
7) Gluten, kick the gluten. Its effects can be very subtle, and take a long time to show but once you have been off it for a while you will know all about it if you stray from the path of avoidance! For me its not just gluten, but the closely related proteins known collectively as gliadins, which are found in all the seeds of the grass family. And generally eat as clean as you can. Ditch the additives, the preservatives, the flavourings. In fact just ditch the processed food - William Davies suggests that if it has more than five ingredients, or you don't know what any of them are, then it should go back on the shelf. This does mean cooking, and/or learning to cook. But it doesn't need to be difficult.
8) For me a homoeopathic remedy has proved phenomenal. Over the years I have visited homoepaths many times. But only three remedies made a really dramatic difference - all given by different homoeopaths ( and all after I hadn't seen a homoeopath for a few years). But those three changes have been worth it! See a member of the Society of Homoeopaths, but once you have been given a seriously good remedy (sometimes in several stages at different potencies) give it a year or two to really work through.
One of the results of chronic malaise, with no help from doctors is that we become desperate to try anything! Resist the temptation to do everything at once, and give each change at least a fortnight to bed in, and show a benefit or not before making the next change.