You are doing great - no doubt you will reach your goal. I bet you are in a minority continuing your therapy twice a day for 3 months, but it will be worth it in the long run! I had ACL/MCL replacement & repair almost 30 years ago, did therapy for 6 months, and got back to every prior activity without weakness or limp. And I had a very "complicated" hip replacement journey that ended with over 6 months of daily therapy - 11 years later, my hips are about the strongest part of me.
Keep your eye on the prize- long-term success!
Congratulations on your hard work.
Sue