Honestly I would avoid SARMs until your natural testosterone production has returned to normal. While SARMs are not massively suppressive like steroids it will suppress a little and considering your testosterone is already going into the basement after a 12 week run of steroids, why not give your body a chance to go back to where it should be naturally. Otherwise you could do enough damage that you end up needing testosterone replacement therapy for the rest of your life.
Not saying it was all caused by SARM's, but up until I started TRT the only PED I used was SARMs and initial blood tests had my testosterone at 300 with 200-1100 being normal. 300 was about equal to what an 80 year old man should have.