I agree with all the people about forcing. You can't apply human functions and dysfunctions to animals.
My snakes determine when they want to eat. Some eat 3-4 days. Some are 5. Some are 7... and so on. I breed my own food so I can offer whenever I like to. I know my snakes and I know their body language so I can almost always tell within a moment or two if my snakes are going to eat. All of my snakes will take a break if they don't want to eat. I think some of this stuff is totally just parroted around from forum to forum.
Regards,
B