PCOS will slow your weight loss down, but if your doctors truly are telling you don't bother you're wasting your time....find new doctors. The online calcutators probably won't hold true for you, but don't starve yourself either. In the meantime read up as much as you can about the condition from reputable sites affiliated with a well-known university or hospital. Avoid sites that want to sell you some magic herbal tea the "medical establishment doesn't want you to know about". 2.5 lbs lost in a week is a pretty good number, actually, so don't kick yourself because it isn't going fast enough. A loss is a loss.
I am not a doctor nor do I play one on TV, but it sounds like you've made a good start. Wii Fit and walking daily is excellent. Throw in some hand weights or a couple bottles of water in your hands on those walks when you're able. Getting the dog on board will help you too, because puppy will learn the routine and push you to stick with it. If fresh fruits and veggies aren't an option, maybe you could go frozen or low sodium canned. Dried beans, lentils, etc will get you some good fiber and vitamins and will keep well. Maybe you could bake your own bread? Or if it's warm enough where you are, start a garden and make your own canned/frozen produce. It's never easy but you can do it. I'm a big fan of making it a lifestyle change and not a diet, because if you stick with some unrealistic plan to fit into that dress...what happens after the wedding?
If I keep starting over, eventually it will stick, right?
Current weight: 140
Goal weight: 135