Just start introducing it. We've been doing it for months. Sit him on it after a nap, before bath time etc, give him claps when he sits. He now walks and sits on it randomly. We'll tell nursery to sit him on at nappy changes and then it just happened with my oldest.
I won’t start till the language and understanding has come in and he can communicate his needs I won’t start till at least 2 years old if my older son is anything to go by that’s when he’ll be about ready.
We trained my eldest last year at 26 months and he picked it up really quickly, he was fully trained within 2 weeks. We used the Oh Crap! book method and I found it so easy to follow. I’d like to do it over the summer months so will probably do it next July/ August x
Only start to potty train when you know they are ready. If you start to early it can hinder the whole thing. My daughter was 2 when we started and she picked it up within a day but we knew she was ready. I won’t be looking to start with my LB until at least the age of 2 x
Following this chat for some ideas also, I’m waiting for my little one to learn how to walk more stable and then also sit on a stool without falling.