Just because he's uncomfortable in his diaper, it doesn't mean he's ready to potty train.
It will be a lot more successful if you start when he's closer to 2 years old. You can start now, but it will definitely not be a quick process. Good Luck
I'd wait until he's at least 18 months old. It will be easier. Cherish the little moments you have with your baby. Before long he'll be using the toilet and you'll actually miss changing those diapers.
They grow up too fast as is. No sense in making him grow up any faster.