Very sorry about the problems.

Here is an article from the American Academy of Dermatology:

10 Reasons Your Skin Itches Uncontrollably and How To Get Relief
https://www.aad.org/public/everyday-care/itchy-skin/itch-relief/relieve-uncontrollably-itchy-skin
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Article from an MD re Candida and various treatments, including natural ones:
https://centrespringmd.com/symptoms-of-candida-and-6-natural-remedies/
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My thoughts (having been in endless support groups for medical problems)

Be mindful of optimal hydration. Getting those 8 glasses of water daily is really necessary when dealing with any health issue.

Make sure you really sleep all those 8 hours and every night. Some folks try to push it and do with less. If you have any medical problem, getting a full amount of sleep is essential.

Re itching...I would switch to all scent-free products...for laundry. Can only help. You could possibly be developing an allergy to some perfume / scent they are using in one of your products. The idea there would be you are now allergic to the detergent used on your pillowcases and sheets, hats, and etc.

And, generally, go scent free if you can.

Your diet sounds excellent, but it does look like too many carbs for someone with candida. I am not a doctor, so I can't give you a figure of how many grams per meal and per day is ideal...but my quick look at what you write is, yes, too many carbs for someone with candida.

Topically, oatmeal products have been used to calm down itching. Again, I am not a doctor. But maybe you could ask your dermatologist if some of those products might help.

Here's one article from Web MD about using oatmeal to relieve itching:
https://www.webmd.com/skin-problems-and-treatments/eczema/colloidal-oatmeal-baths
There are anti-itching lotions, products with that collodial oatmeal.

The company Aveeno makes a couple of those products.

Again, from the American Academy of Dermatology:

How To Relieve Itchy Skin:
https://www.aad.org/public/everyday-care/itchy-skin/itch-relief/relieve-itchy-skin
Three of their suggestions:

Apply a cold, wet cloth or ice pack to the skin that itches. Do this for about five to 10 minutes or until the itch subsides.

Take an oatmeal bath. This can be very soothing, especially for blisters or oozing skin due to chickenpox, hives, poison ivy or sunburn.

Moisturize your skin. Always choose a moisturizer free of additives, fragrances and perfumes.

So, that is what I came up with, hope something helps.

I once had a bad reaction to medication and had maniacal levels of itching for a few hours. It was extremely unpleasant. My sympathies. Take care now.