Progesterone is only needed to balance oestrogen as part of HRT, in order to protect the womb, though a few women like it in small doses due to its sedative effect, and this is harmless as I understand. Unfortunately those of us who do need it for endometrial protection need to take it in large doses - because it is very unstable in the body so needs to be constantly replenished, and to ensure sufficient gets to the womb where it is needed. (When it is produced naturally in the body much smaller amounts are produced in pulses, but much more frequently....The side effects as a consequence of this (the large doses needed) are too great for many of us but we grit our teeth and persevere!
Glad to hear your sleep has improved - for many of us - the sedative effect is not calming - leading to grogginess, fatigue, head fog and sometimes worse. I have vivid dreams while taking it and it irritates my bladder at night as well as the vaginal area....
Hurdity x