Osprey is right - from what I heard from a friend of mine who transitioned (male to female) there are some things that testosterone influences at puberty that remain for life (voice depth, bone structure, beard follicles etc ) electrolysis can get rid of beard but some things can't be altered by surgery like height, shape, shoulders, jaw etc all these things that have been shaped by testosterone at puberty and look distinctly 'masculine' .
That being said it looks like you are 22 right? This is a big commitment to alter your body like this, there may be things that you arent aware of that will alter too. Thought patterns, decision making, anhedonia, anorgasmia....you just dont know what will happen, until you experience it. How bad is your thinning now? Hairpiece suggestion is solid idea....otherwise a standard regimen (minoxidil, Ketoconazole and finasteride) until Histogen and Replicel arrives