Okay, this is going to require some serious thought on what your hands touch throughout the day.
Please be aware that skin once sensitised can overreact for about 6 months before calming down.
Here are a few rules,
when cooking, try to avoid handleing raw meat with bare hands,or cheese.
if you have to peel potatos or any other starchy food , do it under running water.
Use a plastic bag when handeling acidic foods, like tomatos.
Dont put your hands in very hot water, wear flock lined gloves when washing up or cleaning around the house.
To dust use one of those wand type brushes to stop dust going directly on to skin.
Do apply any steriod doc has prescribed, thinly, in small amounts , normally twice a day.
Frequently moisterize hands, with prescribed cream.
E45 is a bit weak , but will help, avenno is ok with some skins, but its trial and error. There are better ones out there.
wear steriod and moisterizer at night and put 100 % cotton gloves on at night, if only for a while until cream absorbed.
( not a romantic look though!!)
Keep thinking 'protect hands' at all times.
Winter is coming, add a layer of hand cream before going out in to cold weather.
The contrast of hot and the really cold air can dry out skin further.
I did this some years ago, and my hands were in a terrible state, getting infected and needing antibiotics. After a couple of months things were dramtically better , and it has never been as bad since.