Food volume vs weight

This is my second time around for WLS: VSG--->RNY. I was somewhat successful with my VSG but over time I could eat bigger and bigger portions. This time I am being very meticulous about measuring. I was told that my new pouch could only hold about 3 oz of food at the most so I purchased 2 oz salad dressing cups and that's what I use to measure food. I don't weigh anything. If it fits in the cup, I eat it and nothing more. I was wondering if anyone else does this and if it has been successful for them. I'm only one month post op and not really hungry yet and I'm pretty sure somewhere down the road I'll increase my food but I want to keep my pouch as tiny as possible for as long as possible. 

That will work short term.  Just like the sleeve the pouch becomes bigger and you will be able to eat much more.  The most successful people use a digital food scale to weigh all portions.

There are two reasons to weigh or measure. The first uses volume, and is important for newbies still healing. You don't want to stuff too much volume in on freshly healing innards, especially when your nerves are cut and you can't feel it.

The other reason to weigh food is to control calories. Measuring by volume is pretty useless for calorie counts. A good kitchen scale is necessary. I weigh everything I eat. It keeps me on track.

I wanted to support the two great posts before mine.  I believe it has been essential to use my digital food scale to be successful. I only use liquid ounce (volume) for "slider" type foods: yogurt, chilli, protein shakes, etc -- and truthfully-- these are foods you should limit anyhow as you get further out.  Mainly I use weight -- by oz or grams -- to measure dense protein. Not only is this most accurate, but it also assures that I'm eating the best type of protein to best utilise my tool. 

Yes right now it's pretty much cottage cheese, yogurt and occasionally super moist chicken salad. I tried deli turkey and the cup held about 1.5 slices (3 slices = 2oz) but I couldn't really eat it yet. Thank you everyone for your feedback. I'm pleased with my progress so far and know where I went wrong last time and what I did right so I'm just looking ahead