The Formula for formula

I might be stupid.

The can says: to make a six ounce bottle you first fill the bottle with 6 ounces of water and then put three unpacked, level scoops in the water. So, once you mix it up it's more like 6.5-7 ounces because of the addition of the powder.

Does this mean that they count a six ounce bottle to actually be 7 ounces of liquid?

I feel like I'm overfeeding Macias when we make his 7 ounce bottles.

We put 7 ounces of water in and then 3.5 scoops of formula. By the time it's all said and done it's about 8-8.5 ounces in the bottle. Does that count as a 7 or 8 ounce bottle?

This is so annoying.

Should I pour out liquid to 7 ounces once it's mixed up?

On another note, the nurse at his pediatrician's office said that adding 1 teaspoon of brown sugar to one of his bottles daily will help keep him regular (he's having trouble pooping sometimes and it comes out with a clay-like consistency). I have been putting a little more water in his bottles to help with this but we've started the brown sugar.

Has anyone heard of this and have you done it? I think the constipation might be from the formula. We switched from Similac's Advance formula to the Target brand of comparable formula. It's half as expensive and almost identical. I guess I know what isn't identical. Has anyone else had this problem with name brand vs. generic?

Thanks moms out there! (and dads if you care to share).