Mathew's first words

I took Mathew to the doctor's office on Wednesday and he is 95 percentile for his head size, 50th percentile for height and 25th percentile for weight. The doctor told me I need to feed him more. He told me I needed to talk to him more to get him to start saying things so I've started to work on it more. Although it's been months since he's been imitating--for example, putting phones to his ear and saying "DAAaa" which basically means hello but he hasn't properly articulated any words. Well now he'll point to his eye and say "aaahhh" and point to the lights and say "aaaaahhhh". If I ask him to point to one of those things he does. Do those count as first words? He is constantly imitating what we do. He insists on eating what we are eating and will scream his lungs out if we dont give him his food on a plate and with utensils. He also plays with dolls and pretends to feed them with bottles--smacking his lips while he feeds them. He is probably better at picking up toys than Ellie. He'll go around and put toys in bins.