I hope some parents chime in here with experience. I personally don't have kids, but to be honest the thought of a 3 year old child being on immunosuppressants terrifies me a bit as I had so many bad side effects from so many of them. What kind would he be going on, if you don't mind me asking?
I just recently wrote an article about my experience if you're interested (granted, I'm not a young child, but still thought I'd share!) https://atopicdermatitis.net/living/why-never-use-immunosuppressants. Not intended to scare you whatsoever, of course everyone reacts differently, and many have success with them. Just thought I'd share some thoughts while others hopefully chime in as well! I hope you find the best solution for your son - please keep us posted! 😀 -Nina (Team Member)