The Doctors I've worked with recommend doing a variety of things from Meditation, calming activites, working on emotional issues if you have any. Getting a good nights sleep, looks like yours has been disturbed with working shifts.
Good wholesome food (so you are on right track using blood type diet.
I switched to green tea, used to be a big black tea drinker, I believe that has helped a lot and fits our blood type. Chamomile tea also helpful.
And if you can afford to add minerals (magnesium, calcium, zinc, potassium) and vitamins C, vit. B5 are all good for adrenals. Dr. D. has lots of good ones.
And there are foods that are particularly good for adrenal health, avocado, almonds, rice bran, salmon, sardine, pine nuts, rosemary, cumin, sage, fennel and oregano.