N.R.
I started training my kids wen they could sit, around 4-5 months old. Everytime I saw the face of "poo is immenent" I would take their diaper off and sit them on the pot. My son was potty trained at 18 months and he has no problem sitting on the toilet. My daughter is 10 months and she likes the potty as well. I found this to be a great way to train because they have no emotional issue with sitting on the toilet because I started them so young. I hope this helps you.
N.