Adrenal fatigue is not a thing. It's a nonsense diagnosis since glands don't tire out like that.
However, there can be an adaptive hypocortisolism where the body starts underproducing cortisol from chronic elevated stress. But the gland is not fatigue,d the receptors have changed to protect the body.
There is little to nothing that can be done short of cortisone by pill. Possibly DHEA but you have to get levels tested.