I put my ds in pants for the first time this morning. I've put him on a potty and on a training seat over the loo, but he wouldn't pee and has been holding it in. As soon as I put him in pull ups this afternoon for his nap, he let go straightaway. Any tips on how I can encourage my ds to eliminate in the potty would be gratefully received. Thank you! (I think it's going to be one long summer!)