Went to see my 4 month old's dr for a check up today but then he said we can start introducing solids soon if he is eyeing us eating and wants to take a spoon. But isn't 4 months way too early. I don't remember when my other two started eating solids but my son is not sitting up on his own yet and is 17 pounds at 4 months old as of last week. Granted he was 9 pounds 4 ounces at birth. What do you think?