Keep up the good work! Perfectly fine to move the HSM around to where it best fits your needs.
While most people prefer it at night (sometimes to just socially be with family), many do better with it at breakfast or lunch. “Book-ending” the HSM with shakes helps many people. And there’s also the issue of nighttime overeating. You’re stressed from work, the TV is on, and it’s hard to stop eating. Knowing your HSM is already over and knowing you can only have a shake or two is powerful. It sets boundaries. And these carry over after the V-Diet is over and develop into good habits. So, whatever HSM schedule best fits your needs, and it may take a week of playing around with them to find that out.
As for the apple, while it probably wouldn’t hurt, I’d suggest just having it as part of the HSM. Keep the “shakes only” rule tight, not because it would ruin the diet but because a V-Dieter needs that strictness early in the plan. We don’t want any slippery slopes in week one or two.
Also, the V-Diet isn’t just about fat loss, but changing dietary habits. If an apple becomes a reward in your mind instead of a pint of ice cream, that’s awesome and will again carry over long after the V-Diet is finished.