Hehehehe, I also struggle with my water sweetie but I've got it down now! Drink my first litre by 12:30, have about an hour break from it after lunch and then start my 2nd litre to make it last until 7ish! I just have a 1L bottle at my desk and keep swigging on it, before you know it, the bottle is empty! So much easier than having to keep filling up your glass!