All jokes aside Jotaro got so hurt intentionally just so Josuke could pinpoint the location of the rat
If it was just Jotaro's fight I'm sure he would have figured something out
so josuke becomes hol horse when he was about to kill dio all of a sudden? u know i guess its somewhat acceptable for jotaro to tell josuke about the rats location but i thought he said he had bullets/bearings for himself? im probably stupid or missing something