Rogaine Progress or lack of.

I have been using Rogaine extra strength for 6 months now and not noticed any effect on the amount of hair I shed throughout the entire period. But I have noticed some regrowth at the front of hairline.
Should I continue to use it incase it is having more effect than i'm realising or try another product? I know it doesn't necessarily prevent hair as it's not a DHT blocker but i've tried using nizoral for the last 3 months alongside but it's had no impact to my knowledge.