For three weeks out your lack of control while moving about is worse than many but not off the charts although it is clearly hard to live with. If you haven't done so already, try to cut your caffeine intake. Not just coffee and tea but soft drinks such as Coke. People also report varying reactions to alcohol so limiting that might help. Aside from that, keep on with regular walking. It would not be common, but be alert to the possibility of a urinary tract infection – fever, burning while urinating, cloudy urine. For any of these contact your doctor.
Healing does not always go in a straight line, but the fact that you do have limited control remains a good sign.