thankfully it won't take long to see changes. more water and more veggies in your fruit for a couple of weeks and you will see massive changes. i suggest you take photos twice per week to keep track of changes. even once per day is better but depends on your discipline
by the way. you dont' owe it to me or anyone to do anything. you don't need to prove anything to strangers on the net. you just owe it to yourself.