Yeah understand the frustration... I do know these things do indeed take time, especially for the bigger operations.. but if you're feeling worse afterwards and overall, definitely be totally honest with the physio. Usually they can be upfront and honest with the game plan here, and what incremental progress to make.
But yes, seeing a different physio can make a massive difference, they can be fairly varied in approach.
For my partially torn ankle ligament and slight fracture the doc said I needed to get a cast on it for like a month or so. The wait was so long so eventually went into the hospital to see if I could get a cast. The doc there said no you should have been getting physio this whole time, not a cast...
So booked in for a physio and he said the same. After one session I was off crutches, and it only took three total sessions. Obviously a different and more minor issue, but my point is that second opinions are always a good idea
. But that being said, sometimes it can be quite a slow process to trust in... but yeah I can't speak to what your knee needs for healing. Hoping it gets sorted, keep us posted