Yes, you should not let it go. you've already done a lot of stuff, keep up with the hard work and it will help, slowly but surely.. oh, also.. read all of aunty's posts on the eczema forum.
an additional thing to add to your regimen might be oil swishing in the mornings and during the day. I've been doing it for sometime, and saw great improvements in the beginning. read more on oil pulling forum for detailed info. I use Hain Sunflower Oil, and do it 3 times a day. very entertaining, not disgusting as most people might think.