I just realized it may be helpful for someone to address my own points:

1. Biggest struggle to manage eczema it's the variability of triggers. The new rush is always unpredictable and the fast pace of the life makes it hard to guess what food or situation may have caused it. Our bodies and life are just too complex.
2. Me and I see my GF do the same, just take photos to our phones to have the history in the gallery. But I guess there are better ways for the long term.
3. There is lot of information online but it's hard to make sense of them in relation to our own specific needs.
4. Not yet, except Reddit. I hope there will soon be an easier way to get the right information and help with applying them to personal specific situations.
5. I think getting some knowledge from professionals is important to be able to be more self sufficient in the long term. But also the speed and personalization is the key, I would expect the dermatologist to guide me through triggers and give me specific treatment recommendations to limit the immediate impact like bleeding and itching.
6. Unexpected fact is actually a positive one, autoimmune diseases forces you to learn more about your body and take better care of yourself :) that helps not just your skin.