Gotta do protein and carbs both but prioritize meat. I do eggs with sausage or bacon and maybe half a toast in the morning. Even if it's just a scrambled egg, some bacon, and a bit of toast, your body feels way better than what you might be doing now. Stick with actual whole foods though.
Anecdotal but a friend reached goal on just 5mg Tirz then quit completely. Really happy. Myself I have to keep titrating because I hit plateaus. Some are resistant, some are easy keepers. Not helpful but depends on the person. If you lost 10 in week one at 2.5mg you're lucky.