Personally, I only weighed my vegetables during my first round of hCG. I never did again- I didn’t really find it to be necessary. Once I saw how few calories was in my romaine lettuce I was like, I dooonnnn’t think I need to be doing this lol.
For the hCGChica recipes site with the P2 recipes we did carefully weigh and measure everything for the creation of the recipes so that our calories and macros we listed would be very accurate just to make things easier and more reliable for you- I think this is a good idea so that if you eat a P2 recipe, you do know what the total calories are.
Some of the veggies do have more calories for the volume (like onions or tomatoes) and it’s a good idea to just keep things in check by having a basic idea of how many veggies in a recipe adds up to what. But it’s certainly not required.
I hope this helps!