Doxycycline to spironolactone: My skin is great but my derm want to change my prescription, what should I do?

I had cystic acne mainly on my forehead for a while. I was prescribed 50mg Doxycycline and did not see an improvement. My dose was bumped up to 100mg, after a year my cystic acne is gone. Only one in the last 4 months. They want to take me off doxy bc not a good long term solution. My derm prescribed Spirolactone. I am nervous to take it as my acne does not seem hormonal and my skin is pretty great now, don’t want to mess it up but also don’t want to stay on 100mg of doxy. what should I do?