Greetings and welcome aboard!

Yeah, the initial weight loss is mostly water. But it sure is encouraging. Unfortunately, when your weight levels out or climbs a pound or two that is equally discouraging even though it is still mostly water. So be prepared for it and you won't have near the anguish that many have.

It's great that you are jumping on the pre-diabetes right away. I wouldn't be surprised to find that you can avoid the Big D altogether.

Good luck!