Julia-What a tough time you are going through right now. You are switching the meds and dealing with chickenpox at such a young age! The worry can feel all-consuming at times. Your endo is probably right about the new dosage. Your baby is going through such rapid growth-the first year of our daughter's life was definitely the most difficult and replete with med changes. Having her levels checked in 3 weeks is a good idea-sounds as though your endo is on top of things and listens to your concerns. Just keep asking those questions, it sounds like your'e doing a great job! When my daughter was 3 months, I didn't have a computer, had to search hard at the library for information and had absolutely no support. She's 4 now and I have learned so much through this board and all the suggested websites. I thank everyone. Hang in there and I hope your little one's fever breaks soon. You'll get through this!