My son (who is turning 3) has his own potty, and is quite content to sit on it, sing his "potty song", stand up, and "flush" (it's a plastic training potty that plays a sound when you pull the lever).
However, he will generally only sit on the potty fully clothed.
If we ask him if he'd like to take his pants off to sit on the potty, he'll politely say "no thank you".
He has allowed us to take his pants off for the potty a handful of times, and he apparently takes his pants off to sit on the potty at daycare (he's actually urinated in the potty properly once at daycare).
We offer him treats (M&M's candy), and have told him that he can have a pet fish once he's fully potty trained. We explain to him that he can only have the treats if he actually pees or poops in the potty, and that he has to take his pants and diaper off to do that. He also understands that the fish is a long-term goal, and won't happen until he stops wearing diapers altogether.
This has been going on for 3-4 months now, with no apparent progress (aside from the single successful use of the potty at daycare, about a month ago).
We've taken the approach of using treats as incentive to be consistent with what happens at daycare, because quite frankly his daycare provider has had more success than we have had.
Is there anything we should be doing differently, or that we can add to our approach, to help our son be willing to move forward? Or should we just wait until he's ready?