About shooting IDPA with a 22 - you should ask the local match director.
Sanctioned matches are a no-no but for local club matches, we let folks shoot some outlaw guns (out of the rules) if they have a purpose. You are new, have recoil problems, etc.
I shot one with my SW 632 327 mag to get some trigger time beyond the square range. Of course, it didn't count in the match.
See if a friendly club would let you. Of course, we shoot 22s in steel quite a bit.
Normally I shoot a Glock or 1911 but once in awhile it's fun to try something else.