All the advice below is sound
It's early days
But I took a stab at tour PSA Doubling Time w the figures and times you provided. And assuming you first test was Dec 1 and last test Feb 20, that's 82 days. According to a PSA DT calculator, that puts your PSA DT at around 19 months, which depending on your Gleason score coukd put you at a very low risk of aggressive PC.
Need to find out more- but 19 montHs PSA DT is very good news.
Good luck!!