Introduced potty few weeks back to DS aged 2 4mnths. Some successes early and spent 4 days to introduce to pants last week (Gina Ford style). Likes pants and not many accidents at home but wouldn't really ever ask to go on potty - just agreed to go if I reminded him at right time! But now back at nursery and won't use potty so having lots of accidents which really upset him. Have to put him back in nappies which seems all wrong and worried he'll think he's failed. Not sure of course of action now - should I persevere or just leave it for a few months until he has more control? Baby due February too. Any tips so appreciated!