It's probably not what you want to hear but I really would keep going. I know it's boring but I suppose that's part of the diet. Of course other foods would be more exciting, that's why we're in the position we're in and needing to diet! I'd be afraid that if I'd taken a break, it would have been very hard to go back to the shakes, once I got a taste for food.
I doubt that you would experience week 1 weightloss again after a refeed. It would depend on how long you were planning to eat for before going back on the shakes? The majority of weight loss the first week is water. If you refeed properly, you shouldn't gain any water so you wouldn't have any water to lose when you go back onto shakes. I would say your weightloss that first week would be similar to your average weekly weightloss now.
Hope that makes sense? Obviously it's your decision but I am refeeding now as I'm at my goal on Lipotrim, and there is no way I could go back to TFR after reintroducing food! I'm glad I waited.
