As long as my catheter (SPC) was in place, I couldn't empty my bladder sufficiently. I had a high PVR of over 200 ml. However, after the catheter was removed, my bladder came back to life. Now, I suddenly had a low PVR (measured by ultrasound) and needed to pee often. After a few days, I tried to suppress the urge, especially at night. My bladder had to "learn" to tolerate a higher volume. This took another four weeks. In your case, your PVR should be checked. If it's already fairly low, you're definitely on the right track. It will still take some time, but your bladder will settle down.