25 year old male with Norwood 2 recession - should I start Rogaine/Minoxidil?

Before considering treatment see a doctor for an exam. Internet doctors cannot give you treatment plans because they have not examined you.

I suggest posting photos and seeing a cosmetic dermatologist with experience in hair loss to get you on the right preventative treatments.  Best, Dr. Emer.

Your biggest enemy is the
progressive thinning leading to a balding pattern that is not evident at this
point in time. The degree of thinning that you are showing would suggest that
you should see a doctor who most likely will get Bulk Measurements of your hair
to determine the degree of the thinning that you are presently having. If the
diagnosis is early genetic hair loss, then the best treatment would be the drug
finasteride which is highly effective in men of your age and may not only stop
the hair loss but possibly reverse it. If you are developing a more advanced
balding pattern the best test to get will determine the Bulk Measurements of
your hair and this will show, over a one year time frame, how effective the
treatment will be. Once you know this information, then you and your doctor
need to develop a MASTER PLAN which will define what you need to do over the
years to come.