PRP angel system hair loss treatment - frequency of treatments? (photos)

I'm 37 year old male. For years I've been using 5% minoxidil to avoid frontal line hair loss however minoxidil lost its efectivness in the beginning of this year. Two weeks ago I decided to try PRP angel system hairloss treatment. I was told that this solution is the most effective due to high plates concecentration comparing to other PRP tratments and another treatment should be performed after 3 months. Im wondering if I should do 2nd treatment sooner - I'm still loosing hair.