I'll be 62 in June and want to do 10, neutral grip, pull-ups by my birthday. I've been doing them frequently for about a month and could do 4 when I started and up to 5 now although form falls off on the last one. This past month was bad for training cause I had a lot of interruptions but I'm back on track now. Is 3 1/2 months too short for that goal? I have two places at home I can do them (one is a rock climbing simulator), one place at work and then there's the gym. I have plenty of opp's to GTG.
BTW, I'm 6'3", 216 lbs, so I'm pulling significant weight.