How long do miniaturized hairs grow? Do they have the same growth time as terminal hairs?

Many medications may cause hair loss but it is generally not the number one cause of hair loss in women.  You may want to see a doctor to find out if there are other cause for your hair loss.

Minoxidil will increase blood flow to the scalp in order to revitalize hair follicles minimized by DHT, the molecule responsible in androgenetic alopecia (male pattern balding). It can help in the earliest stages of traction alopecia, but there is no guarantee that it can reverse the damage done...

I will recommend a trichology hair analysis to see more details and decide for the best treatmant combinations like finasteride + prp or finasteride + minoxidil .

I suggest seeing a hair loss expert now to evaluate and go over your condition and provide you information about your best treatment options. There are great non-invasive options like prp/progesterone and/or hair transplantation. See an expert. Best, Dr. Emer

It does not matter what time of day you take your finasteride, just that it is at consistent time each day. Finasteride is not excreted in your sweat so your workouts will not affect its mechanism of action. 

I suggest seeing a hair loss expert now to evaluate and go over your condition and provide you information about your best treatment options and supplements. There are great non-invasive options like prp/progesterone and/or hair transplantation. See an expert. Best, Dr. Emer