I have a 10 year old CAH son and am pregnant with another child.  My OB/GYN put me on .75MG of Dex in the morning; and .5 MG in the evening.  I'm worried because Dr. New recommends "20 micrograms per kilogram of body weight per day divided into 3 doses.  I weigh 145 lbs.

First, according to this recommendation, am I getting enough Dex?

Second,  has anyone else only been on twice per day dosages? 

thank you