Eating

So my child only eats the same 12 foods each day. He won't try any new foods.

To maintain his weight I give him about 6/7 meals a day. He is isn't over weight, he's just normal. All his meals put together wouldn't add up to a childs calorie intake which can eat all foods.

If he misses a meal he is extremely hard to feed at the next meal due to reflux acid. 

Does anyone else experience this with themselves or their child?