What supplements would you recommend for someone with swerve top to bottom ezcema to support my body?

Hi, i currently have top to bottom swerve ezcema from face to the legs, everywhere you think ive got it there. Currently waiting for treatment 13 weeks and my skin peels off in lumps like its nothing, then its weeps with liquid. I just wanted to try anyrhing that may work or help to reduce the damage to the skin or anything to support my body.

I currently take vitamin D3, just D3. 1000IU (UK so you can imagine no sun, take it all year) and whey protein to help with the skin repairing itself, dont know if it helps but do it anyway. And just antihistamines tablets.

Any recommendations to add to just support my body during this time? I understand it wont fix it, just to help me feel less crap in a way. thanks everyone