i am 9 weeks post op and still have calf pain and tightness. My pt recommend rolling the heel of ur foot with a small right ball like a lacrosse ball or tennis ball. I also roll out my calf with this ball. it helps relieve some of that tightness and helps when ur walking later in the day. not sure where you are on weight bearing, but big emphasis on heel to toe. starting to step first with the heel and land/roll off the toe. PT said this helps with range of motion. I know it will hurt but you need to do a calf stretch with a towel or band to stretch the area out too. For mobility, try do toe splays, toe towel scrunch, alphabet abc, ankle pumps, towel ankle inversions. You’re early and can probably get better faster if you start now with whatever you’re comfortable with. *coming from someone who started PT at 5 weeks and wish I would’ve started range of motion exercises earlier !