We have used the liquid form on  both our SWCAH daughters our oldest took it until she was almost 2 and her levels have always been good. She is now on the cortef pill which she gets 1/2 in the a.m. another 1/2 in the p.m. and a whole one at bedtime. She is now 3.  Our 4month old is on the liquid and so far so good with her also she gets o.6ml 3 times a day.

Our pharmacist compounds it herself right before we pick it up and it is good for 1 month. Good Luck  :)