I have a 22 month old who is definitely into the hitting phase, but mostly just with me (occasionally his dad). He's an only right now, with a sibling on the way. Hitting occurs maybe 50% of the time because he is frustrated, 50% of the time to clearly get a reaction out of the parent. this has been a good few weeks, and he does not do it to anybody else (grandparents, kids/teachers at daycare, etc). strategies we've tried that don't seem to do anything: grabbing his hand before he hits and firmly saying no, saying ouch very loudly (stopped this pretty quickly as he clearly wanted a reaction), and now we are just moving away from him and ignoring him for 5 minutes after he hits after saying "we do not hit." I feel like we're doing everything I read about - being firm, being clear, not being emotional, etc - but nothing seems to work. I'm happy for now that it's just mostly me, but obviously want the behavior to go away and certainly don't want it to escalate to him hitting other kids at daycare. any advice?