Gail-Skipping lunch is what is causing you to feel starved by dinner. This will happen whether or not you have had WLS. But because you have already had your surgery it is imperative that you not skip any meals, period. If you don't feel hungry at lunch time just take a few tiny sips of your protein drink anyway. Wait 15 minutes and take a few more. Maybe you can get a few more small sips every 15 minutes until your protein requirements are met for lunch. I promise you won't feel starved by dinner if you do this. As I have mentioned in other posts, I am pre-surgery but I have already met with the dietitian twice. We discussed diet plans and also the consequences of skipping meals, etc.
As for the canned fruit, eat away. I buy lite fruit with no sugar added because I am diabetic. I can guarantee that 99% of lite canned fruit contains only fruit, water and in some cases concentrated fruit juice to replace the sweetness of processed sugar. There is no added sodium or other junk. Some of the tropical fruits may have ascorbic acid (vitamin C) added as a preservative to prevent discoloration. The last time I checked, vitamin C is a good thing. *LOL* Sometimes I home can fruit. All fresh fruit is naturally high in acid, even more so than tomatoes. Hence, no preservatives needed except for ascorbic acid (vitamin C) to prevent discoloration in some cases. I never add sugar either. And because of the acid content you don't need to use a pressure canner which is further proof that no preservatives are needed. One more thing I should have mentioned in my earlier post. Fresh fruit should probably be avoided at this time since you are only 4 months out of surgery. My dietitian told me to stick with canned fruit because fresh does have a tendency to get stuck in the pouch opening. This of course will change when you are further out of surgery, perhaps 18 months or 2 years. Most people this far along can tolerate raw fruit and veggies as long as it is chewed thoroughly.
Keep up the good work and let us know how you are doing Gail!