Rescue Remedy is a Bach flower essence, so it's like a homeopathic. You'd have to ask your naturopath if it would interfere since I know very little about that.
Just thought I'd add another vote to the more protein ideas. My son that was not a good sleeper started on oats and went to other veggies and whole grains. He also has eczema and it didn't seem to be specifically related to dairy or wheat. This season he started out with no skin issues at all, but we started to slack on fish oil supplements and we got lazy in the am and let him eat grain-based breakfasts and the eczema started popping up again. Sometime around his 18 months I was introduced to the work of Weston A. Price and it seems to me that my son's skin and sleep issues began to improve around that time. I would recommend checking out the Price Pottinger Foundation and see what you think. I'd been leaning vegetarian for sometime until reading that, and it really changed my thoughts about grains (not a historically natural part of the human diet) and proteins (mainly animal based, especially organ meats having been a nearly universal first food for babies).
Another main idea that I adopted has really transformed my thoughts of nutrition is to get about 1/3 (by dry weight) of your food daily of the following: Fats (nuts, oils, meats, dairy, etc), Greens, and Sweets (no not that kind- sweet (ie. other that greens) veggies). My family's immunity was iron clad when we stuck to that, and as you probably know eczema is an auto-immune disorder. Btw I developed a recipe for a salve that will fix the eczema and if you want it just send me a pm. It's a little expensive to purchase all the ingredients, but once you have them you'll be set for a long time. So far I haven't encountered a skin issue that it hasn't knocked out.