You must be really close to your goal! So I don't think you have anything to worry about with respect to topping out. But if you can get a hold of some Cagrilintide, that would definitely add a whole new dimension to your appetite suppression. It works on a different receptor--killing your hunger in a whole new way that your brain cells have not been desensitized to yet.
But you might just give titrating up on Tirz a chance so that you don't have to make a whole new purchase. Make sure you start walking at least 10,000 steps a day. That will nullify an extra 400 calories you might be tempted to eat.
Thanks for the compliment about my name!