I have to agree with Jan on that one.
Even if you eat 4 packets and feel lighter, or the scale is showing a better loss, keep in mind that the actual result of your actions will be seen later (3-4 days).
The self-preservation thingie Jan is talking about is true; don't mess with the program, losing less weight is a thing, but headaches, fatigue, etc is another. My GF did that with her VLCD diet, and she suffered those symptoms, along with cramps...
We have the chance to afford MF, and to be informed on this site. My best advice is that you follow the protocol; I found myself that even if I think less calories = more weight loss, on VLCD diets (ketosis), it sure doesn't work that way. All about balance!
Good luck and keep asking questions
It certainly is helping others