I assume you're talking Testosterone injections. Most people respond very well to 100mg (and will obtain a reasonable increase in TT and FT) once comorbidities are resolved (e.g. poor adrenal function, hypothyroidism, etc.).
I strongly question your doctor's knowledge on this subject. You never "do what feels good to you", you start on a reasonable dose (i.e. 100mg/wk) and run blood tests at reasonable intervals and adjust dosage as needed. If you need 200mg to get to a decent level of T, you should seriously consider looking into comorbidities to your hypogonadism.
If you'd like more advice, I highly recommend posting labs (with units of measurement and lab ranges), medical history, etc.