Hi,
My niece was a really big baby and now her baby brother is big too, he's 3 months. There father is 6'3 and really skinny. My niece is now 6 and she is tall for her age, but slim.
Of course I don't know what your little one looks like, but I doubt it is a over weight issue. I'm guessing he is just a big baby. My b/f friend's baby was big too and he is now about 2 and he isn't a fat toddler or anything. I can't believe someone would tell you your baby is fat. That is so rude. If your DR is saying he is healthy then I wouldn't worry

I wouldn't recommened giving a baby 1% milk. I don't think babies under the age of 1 year are supposed to drink reduced fat milk. Babies need fat to help them grow.