That's fantastic! Sounds like you've got a quick learner
I am working on training my 2 yr old dd now...she was all gung-ho in Nov. & Dec., and now she tells me she doesn't like the potting. *sigh* LOL Oh well, it won't be long before she's fully trained and diapers will be a thing of the past.
Keep us posted on your son's progress, and good luck!