Back right off! I'm sorry if it's not what you want to hear but you will be making things worse if he isn't ready.

Also remember that while it seems like an ideal time to TT the arrival of a new bub can be traumatic for a little fella and regression can happen which will frustrate you no end!

Like Dachlostar has suggested bare bummed is a good way to get him to see his gear in action. Take him outside and give him lots of drinks. It may get him going and spark a little interest and get him aware of what is going on.

My boys weren't TT till 3 1/2 for Mason and 2 1/4 for Angus.