DD#3 is due near the end of the year and I have her first lesson with DD#2 PC at 6 months. First lesson will cover fastball, change up, drop and rise. The screw and curve can wait until she is 9 months.
For those of you who don't get sarcasm I am just kidding, 6 months is WAY too late. I am dragging pregnant wife to DD#2 pitching lessons so that DD#3 can start learning by osmosis.
My question is, does she want to pitch?
My mum gave me some lessons at eight (former state pitcher, then current top A grade pitcher. She was 31 and won her team the state championships pitching every game) I took to it quite well. But I had to ask for lessons. She never offered. The only offer I got was when I started saying I wanted to pitch 'if you want to learn I'll show you' I was shown the basic grip (and I've always pitched with a two seam even from that early age, so I always chuckly when I see people say 2 seam is too hard for little hands) and shown the basic motion. We'd usually pitch two to three times a week.
When I stopped pitching at 11 (it's amazing what 'if you practise hard you might be as good as your mum!' can do to a little pitcher. I stopped pitching and didn't start again for six years. Never wanted to attempt to live up to it) I was never pushed into it again.