Your good doctor usually works lots and does not take long vacations.  It usually takes me a day or two to wind down and start feeling the “relaxation” mode.  For most people, taking a vacation implies NOT doing the day-to-day mundane things that become so routine and occasionally boring.  Alarm goes off, get ready for the day, if you have small children, get them up and get ready, go to work, lots of stress there, get home, prepare dinner, help with homework , time for bed and then the alarm signals “here is goes again”.  The act of losing weight is mundane and tedious.  Nothing fun about it.  To take a “vacation” from your “dieting” is a very fun idea.  Try not to look at it this way though.  You are going through lots of effort which will result in improved health and happiness, and also looking much younger.  These are exciting endpoints so try not to get bogged down in the process of getting there.