That sounds low to me. My daughter’s levels were this low for her first year of life and she was showing signs of oversuppression: slow growth and weight gain, moon face, wouldn’t sleep up every hour all night, etc) We lowered her dose and then switched her schedule of meds (3am, 7am noon and 5:30pm) to mimic the natural rhythm of the body. She is doing awesome now. We try to keep her levels between 500 and 1000, closer to 1000 for our liking. She is growing well and levels are great as is bone age. Good luck. Julia