YAY! We've been doing this since Sept/Oct now with my 19 month old!
I say encourage and not discourage
Luke goes poop in the potty almost every day now he pees some too. He spends diaper free time a lot when we are home and he is more aware of what's going on. Also I have noticed a BIG change while he is wearing a diaper he lets me know when he is going, etc.
I don't know why there are any age recommendations on potty training
And breastfeeding is a whole other story for us.....(past 12 months here).
We were at my bible study group last night and when I shared that Luke goes pee & poop in the toilet a few were shocked :LOL I shared that babies can use the potty too its just our "society" that sets time limits, etc.
And it is normal for some days to be successful using the potty 100% and other 50% just go with the flow.
Whoops one more thing. Do you have a little potty for him? It sounds like you do but I highly recommend the baby bjorn little potty. The one that is one piece. A friend of mine on here recommended it to us (thanks Jenn
)...The other one that has the pull out cup thing is more like a toy and Luke likes playing with it
Good Luck on your upcoming potty adventures