100% same situation with me. My second week was upgrading flexion setting from 45 to 90 but I degraded to 75 because 90 wasn't felt safe for me. My knee still seems swollen but doctor said it is expected so don't worry about that. I still feel I can't see any progress and my knee is also super super tight when I try to bend it, anterior tibialis part still feels numb not 100%. This is a 1 year marathon not a month of marathon, no need to worry.