9 months post ACL op - 10 weeks after scar tissue removal arthroscopy, knee getting worse again

Hi guys, as the title states, im now roughly 9 months post op with quad graft + LET. I did not achieve full extension since then. Around month 3 or 4, my knee started getting stiffer when trying to go into extension, the whole area around my patellar tendon got stiff and sharp pain was shooting from under the kneecap. 6 and a half months after the ACL op, i had arthroscopy where they removed cyclops lesion and hoff´s pad scar tissue, i felt instant relief in terms of tightness and range of motion. But now im currently about 10 weeks since the scar tissue removal and for the last 10 days, my knee is starting to feel the same like before second operation. Im doing extension exercises several times a day, elevated heel, quad sets, prone hangs, TKE, spanish squat iso, you name it, but knee is just getting stiffer and pain is worse and worse, my GAIT is also getting worse and even when i achieve some extension, i lose it quickly after taking few steps. I am basically experiencing the same pattern where the whole front of the knee feels like one big stiff area and the pain is getting sharper while in extension.. Now i feel like i have to go get my scar tissue removed again, but its just gonna be the same shit eventually, because i have to get thru it on my own with physical therapy, the surgery alone wont help me, but i just failed recovering from the first scar tissue removal even tho im working with a solid PT online and exercising daily. Have any of you experienced this? Like multiple scar removals? And if yes how did it go? I feel like sometimes i maybe just went into too much sharp pain while exercising and that i just provoked the sensitive area´s after tissue removal, so it started to produce tissue aggresively again. I genuinely cant work out what the classic "3 out of 10 pain level" is, when doing PT, like the pain is sharp but i can withstand it if i breathe, but most people say sharp pain is too much. Im desperate at this point..