It looks like you're on a good recovery path.
My knees are 2 years old and 2 1/2 years old now. They are great - in fact my surgeon look askance when I said I was leg pressing over 225# and told me to cut back!
A few things I found very important during healing and rehab:
1) remember that it's a good 12 weeks for tendons and ligaments to complete their most basic healing. Regardless of how good our ROM is, we can't really challenge our new knees with strengthening exercises until those key support structures can protect us or we risk acute damage.
2) when I overdid something, either on distance walked or time walking or, later on, exercise reps, I would immediately back off for 48 hours rest and ice, then resume but at 1/2 to 2/3 the time or distance or reps. Then my increases would be in very small increments.
3) don't try to do all exercises and lots of reps and sets the way they cram them into a PT session! Our bodies react without pain and swelling if the exercise you choose to do is spread out at intervals through the day with plenty of rest, ice, and elevation in between.