Right Ear drum rupture. Ensure it heals.

My right ear drum ruptured when I got hit by a tennis ball while playing cricket . Visited the emergency on the same day . The doctor said my ear drum ruptured and suggested about 2-3 months to heal . I can hear pretty much everything . However I can hear a ringing sound through my right ear when I am in a quiet room . I don't experience any pain - just the ringing sound/ uncomfortable faint sound when I am in a quiet room . It's been 2 months now and I still hear the ringing sensation . I still continue to go to the gym . I don't do any swimming . I also use cotton to plug my right ear only (not left ear since it's normal) while taking bath . Could you please advise on what I need to do to ensure it heals .