My boy has been tt for over a year and still sometimes will not poo on the toilet. It's just one of those things that takes a bit of time to get used to, and they'll do it when they want to.
I’ve just ordered my little girl a potty watch to see if that will help her go more and set a timer 30/40 minutes after she’s eaten x
My daughter has been potty trained since September and refuses to do a poo on the toilet. I’ve just figured she will do it at her own pace 🙃 The more I mention it I think she will shut down!