Progesterone dosage

Kelly

I am currently 6 weeks pregnant and taking 400 mg of progesterone a day. I have had recurrent miscarriages. Yesterday my progesterone was 57. The doctor thinks I should go down to 1 pill per day (200 mg) instead of taking two pills. Any advice? Will this cause my progesterone to drop and will I be at risk for miscarriage? I am nervous to lower the dose.