That’s the same med times my daughter is on and has been since birth. She is now 3 yrs old. 7:30, 2:30 and bedtime (was 7:30 is now closer to 9.) This has worked well for her.  As for knowing when she gets sick, I always watch for fever, vomit or diarrhea together or seperate any one of this things can show adrenal insufficiency. I also watch for significant lethargy. My daughter is finally able to tell me how she is feeling which helps a lot. Things do get a lot easier as our kids grow and do trust your motherly intuition it does work! Enjoy your sweetheart as they grow up so fast!!!