Potty training bootcamp-Day 1

We have been having a hard time getting Alex to consistently use the bathroom. So, this weekend is training camp for him. Day 1 hasn't gone so well. He got to pick out his underwear and I just kept putting him on the toilet throughout the day. He would sit there and sit there and not go. Once we got back out in the living room...then he would go. We went through multiple underwear changes and didn't do a whole lot that was fun, but it didn't seem to bother him. Kind of a frustrating day, but hopefully today will go a bit better.