Intense resistance at the end of the meal


Hi there, I am working this year on loving my body unconditionally, a skill that I know is fundamental to conquer. I also want more ease also during my meals. Regarding meals, in fact, I often experience intense resistance towards the end of the meal, when I am in the allowing of the urge to eat more than what I planned:
This is the unintentional model
C: end of the meal
T: if I end up eating more I get fatter
F: scared
A: resist
R: pattern of intense distress at the end of meals, gritting my teeth for hours sometimes
or
C: end of the meal
T: if I do not allow and give in means I am not in full control of my actions, I’ll end up gaining fat in the future
F: scared
A: resist
R: same as before
I have written down so many intentional models that could be helpful in these situation, and I either try to use them or I try to stay just with the unintentional model. In many of these situation I see all these tools around my brain still it looks like I cannot make an effective use of them, so that I am not able to reassure myself and talk myself out of this state of resistance, which can last for hours really. Some suggestions? Thanks