T.C.
We did the same thing with my daughter at 14 months. I had sisters who decided to start their kids later when they would understand the whole potty thing and it became a control issue. Their kids were not trained until they were 3 1/2 and 4 years old. So I liked they idea of starting before they knew it could be used for a battle and it worked. By time my daughter was 16 months she was trained thru the night. We would put her on the potty with a book and everytime she went she received lots of praise and maybe a little treat. We put her in underwear and she only had a few accidents and realized she didn't like being wet.
Good luck.