Progesterone Levels Dropping

Mi

I’m currently 5w5d and I’ve been getting my progesterone levels tested weekly on my own because my doctor won’t test them until I’ve had 3 miscarriages. I’ve already experienced an early loss a couple months ago and was nervous low progesterone might have been a cause.

1/15: 37.6 ng/mL

1/22: 33.1 ng/mL

1/29: 22.7 ng/mL

My levels have been going down and I’m now worried about them because I’ve read above 25 is good to maintain a pregnancy with lower risk of miscarriage. I’m not sure how to bring this up to my doctor to get supplements. I’ve been thinking of just doing an online consult with Dr. Gary Levy of Fertility Cloud as I’be heard he will discuss results and prescribe as necessary. Any advice?