M.R.
We just got back from our 15 mo appointment, and our ped said this was very normal. Over night my dd went from eating everthing to looking at the food and either saying yummmm or no! We are seriously down to about 12 things that she will eat. I just make sure that I give her veggies first and the rest of the meal is healthy. Sometimes she eats everthing sometimes barely eats. Just hang in, if they were normally good eaters, they will eat when they are hungry.
Good luck,
M.