DS is almost 2.6. We introduced the potty months ago and he would sit on it after having a bath to get him used to the idea. At the start of the summer we let him run around naked at home and encouraged him to sit on the potty to have a wee. He picked this up pretty quickly so decided to introduce pants, again this went well.
He’s been in pants during the day for the last 3 weeks or so. Sometimes he has good days and others not so good (last weekend he managed to stay dry all day whilst we were out which was the first time and he only had one accident at nursery on Tuesday but today and yesterday at nursery he’s had accident after accident). We’ve found that if he’s not interested in using the potty he’ll just pee in his pants. Likewise, we’ve not been able to crack poops yet.
He’s been at nursery today and had 5 accidents by lunchtime. As a result the nursery took it upon themselves to put him into a pull up to help him ‘gain his confidence’. I feel really dejected and slightly undermined by this 
At home if he’s in the right frame of mind he’ll take himself off and pull down his pants and go for a wee but won’t tell us when he needs to go. If we’re out and about we have to stop every now and then and put him on the potty as he seems to get distracted, forgets and also doesn’t tell us he needs to go.
He knows that he’s meant to use the potty as when he has an accident we ask him ‘where do wees and poops go?’ and he’ll reply ‘in my potty’. He’ll also quite happily use it if he’s in the right mind to but when he doesn’t want to he will pee in his pants without batting an eyelid. He’s quite a head strong child and can’t easily be persuaded, it’s got to be if he wants to do it.
Half of me says I should give it a break and half of me thinks I should keep slogging it out and not admit defeat. DS is my first child and I’m feeling rather overwhelmed at the moment by the whole potty training thing. I had thought it would be getting better by this point but it’s still very much peaks and troughs rather than steady improvement.
Sorry for the long post, I’m literally at a loss as to what is the right thing to do for the best.