I have all the symptoms of adrenal fatigue. outside of avoiding stress, watching diet, and exercise, what can be done to rectify this?

Confirm diagnosis: Lots of things can present with similar symptoms, including thyroid, iron problems, fluid and blood chemistry issues, infections, other hormonal problems, etcetc. Need to confirm or exclude diagnosis. See doc, get blood testing. See what you really have.

Thyroid: Also get thyroid checked. Include free T3 (liothyronine) and reverse T3 (liothyronine) in the testing.

Feed your adrenals : Cortisol - as are all corticosteroids is derived from cholesterol. Studies have shown that a high saurated fat, low polyunsaturated fat diet will increase corticosteroid levels. Also supplementation with pregnenolone will increase ability of your adrenals to make cortisol, progesterone, estrogen, testosterone and other corticoids. Reduce all forms of stress. Get sleep and sunlight.