This is normal. It's very sensitive at first, just turn it over a few times, but it's not necessary to turn it over all day, so it's uncomfortable to walk. After turning it over, you can't stay still, go down by yourself for a while, and then cover the glans. Like this, every time you urinate, you will open the foreskin first, then urinate, and then go back after urinating, so you can exercise many times a day. Over time, your sensitivity will improve.