You will do fine.  I felt exactly the same when my son was born.  He is almost 5 and doing great!!  At the time my son was born I already had a 31/2 year old daughter without CAH.  Thank goodness for newborn screening as we found out within a week of our sons birth that he had SWCAH.  I had a hard time at first because there is so much information to deal with.  Getting used to the meds and the best way to give them to a newborn was difficult.  I am so thankful that with wonderful doctors and medicines he will lead a normal life.  There are still hurdles but I am hopeful all will go well!!!  Good Luck and God Bless!!!