I'd say let it go and try again later. I've got a degree in child development and worked for years running a nursery. I always told parents that if you wait until your child is developmentally ready and didn't push them it would happen quickly and easily. Of course I failed to follow that advice for my own child and earlier this year found myself in the same position as you, similar age too. I thought he was showing readiness but he wasn't. It only worked if I hounded him about going to the potty "to try." Eventually he started to resist more and more and so I backed off. Recently he pulled out a pair of big boy pants from his drawer and wanted to wear them....he hasn't looked back since! I swear we went about a week and he was running off to the potty when his body told him it was time for a wee instead of Mummy :-) He's 3 years plus 2 months now.