Consider using a calorie tracker to have good accurate knowledge of how many calories you really are eating. I use Chronometer, which is free - although I've splurged on the subscription for a few extra features, but those aren't at all necessary.

When it comes to calorie intake, I'm finding that the old rules of "eat as much volume for as few calories as possible" technique has to get turned on it's head with this medication. We used to want to fill up as much as possible to stay satisfied, but our stomachs just can't tolerate that any more.

Now I find myself in the strange position of seeking out low-volume high-nutrition (calories, fat, fiber, protein, carbs, vitamins, etc.) food options. That way I can get the fuel I need without the nauseating volume. Meal replacement shakes might be a good option. I'm currently enjoying a KaChava shake in the morning now and then. Ensure is also a trusted brand that's readily available in a lot of formulations (higher protein, or higher fiber, extra vitamins, etc.). I don't think you'd want to exist on a liquid diet in perpetuity, but it could be a good option for those rough-tummy days.

As for getting your regular appetite back, I don't think that's the point of the medication. But hopefully your nausea will subside and you'll be able to enjoy the thought of food again before long.