How was your recovery from a spacer change

I was just wondering what everyone’s experience with their recovery had been and what it felt like along the way. When did it feel normal I’m 23 months po from tkr and just had a spacer change on it from a 7 mm to 14 mm 2 weeks ago. I was unstable and hyperextended for that whole time as previous surgeon put the wrong size in. Anyway it does get stiff below the knee cap area and what seems like muscle weakness according to the therapist in the medial knee area as it feels strained when trying to get up. Standing in one place for too long also is a challenge. It does feel stable no hyperextending but still feels wonky when I’m in certain positions such as trying to bend the knee or sometimes when walking just feels weird. There is some fluid in the knee and swelling which doctor says should dissipate and not sure this is contributing to my discomfort. I’ve been through so much between these two knees the past two years I just want this nightmare to be over. Maybe I’m expecting miracles right away and being inpatient. My second knee replacement done in December by new surgeon doing robotic went very well, it was then I knew what a successful knee replacement was . it’s been this first knee which has been a nightmare from day 1. I just wasn’t expecting the wonky feeling when I walk at times