D.B.
You can try it, and you may find a parent or two who has has a 14 month old use the potty. But you should really have much more realistic expectations. The average age is much much closer to 3, with many kids being later than that. Knowing he's wet is very different from knowing he's about to pee or poop - those are extremely different sensations. The bladder-to-brain signal rarely develops in very young toddlers, so it's absolutely essential that you not show frustration or anger when he is not successful at this. I know 2 kids in diapers is annoying as well as expensive, but you cannot rush child development. You can't teach them to walk before they are developmentally ready, you can't teach them to sleep, and you can't teach them to use the potty. We call it "training" but it really isn't. If you get lucky, great. But I truly think you will want to have a very frank conversation with his pediatrician about what is normal and realistic, and what damage can be done by having early expectations of a child. You can actually set up a huge battle of wills for later on, and a lot of unhealthy attitudes about the potty if you push too soon.