I feel for you cupotee, I had hand, elbow and back of knee eczema as a child and it was very sore. I always used Aqueous cream daily so it's interesting to see the findings now of it actually aggravating the problem (thanks for the link)
When I had it the most calming remedy for me was an e45 bath, and it was alleviated further by drinking a good amount of water daily, but unfortunately I can't offer further advice other than that.
However, there is an eczema organisation which may be able to answer some of your queries:
https://nationaleczema.org/eczema/types-of-eczema/hand-eczema/hand-eczema-treatment/