At a certain point in time your appetite WILL tap out. There is no way around it.
You just willl hit 6k calories and hunger will be blah. Truly, the only way to fix is going into a deficit again.
So none of the suggestions from everyone above SOLVES the problem, it just makes it easier to eat.
Realistically, slow and steady calorie increase should allow you to hold your appetite as long as possible. TOO MUCH right off the bat is bad. I can honestly hold onto my appetitie for 5 months coming off of a show or deeep diet. Again, i think the first change you can make to allow you to keep staying hungry is faster digesting food. Coming off of my show, i was killing chicken and rice for all 5-6 meals. AND i was hungry within an hour after eating. Didnt matter if it was slow or fast digesting, i was starving. As time goes on, something like steak and sweet potato might be too slow. Thats when its time to toss it out. Oatmeal and potatoes are usually the firwst things to go for me. Macros will get too high and digestion will slow just too much. I might switch to a shake and cream of rice instead. But once you are fully tapped out, there is no going back. Cardio, switching foods out, etc might helppp but they arent solving anything. Its a band aid.