Ah yes, seems like we are in the same boat. My son is also 3 and 1/2 years old, and it has been about a two month process for me to have him even sit on the potty. In those two months he has gone probably four times on the potty..The rest of the time he goes in his pants...He has no problem sitting in wet pants for as long as he can...I have started giving treats like a spoon of ice cream if he sits on the potty, and tells him he can have more if he goes potty...that seems to work a little better than cookies. Iam also going to try to put some type of cereal or something in the potty to see if he would pee on that., use it as a game or something..I am desperate my self. So , good luck.,My goal is to have him potty trained in time for our trip to TN in August. So we shall see...