Just take the leap! I started at 6 weeks and it was great. Although I wouldn't set a 6 mo goal like that, because you can be very successful at EC'ing and still have misses on and off. There are no statistics that equal success. Do your best and that's all you can do. Cuing while he pees when you take his dipe off is good. Now just try it on the potty, right after you take the dipe off stick him on. It took only 2 times on the potty for my 6 week old to poop & pee on cue. It's really amazing.