Frustration with myself and insurance companies

I am feeling very frustrated yet again (and I haven't even had the surgery yet) I talk to a lot of people whom I know, who have had various types of WLS and all of them say they DID NOT attempt to lose before surgery. However, Ive been determined to do what the surgeon suggested, and I have. Am I losing? Only a few pounds in six months.  

I eat 5-6 times a day. An average day goes like this: 

7:00 yogurt or boiled egg, coffee
10:00 protein shake
12:30 lunch I I always take my lunch to work. Today I had a small salad topped with cottage cheese and pineapple. small cup of soup the cafeteria gave us and a cup of yogurt. After I ate that I felt full and guilty... as if I over indulged! 
3:30 (I'm supposed to have another shake but I have only been drinking water about this time) 
6:00 Dinner (usually from the book, Eating to live.)

I strive to take in 64 oz of water a day but I'm not hitting the mark on that :( That makes me feel badly as well. I (hopefully) will be having surgery within 4 weeks and I still haven't been able to create the habit of drinking all my water. 

So, right now I feel my amounts are too large and my water intake is not enough. I am frustrated with myself. 

Next week I have my pre-op appointment and will choose a surgery date. While that is exciting, I'm frustrated as well because Ive been waiting for MONTHS to get my CPAP which is required to have before surgery and I keep getting the run around. I was called today to tell me that the place that Ill be getting my equipment from is still trying to verify my insurance and figure out what they will pay and they are also waiting on ANOTHER signature from my sleep specialist. I'm beginning to worry that they wont have my CPAP to me by the time surgery rolls around. 

I also find myself wanting to indulge more in the foods I love BEFORE surgery since I know that surgery is a life changer.