If it is any help to you this is not your last window of opportunity either (i mean regarding having time off work). In my experience a very slow taper does not affect your ability to work at all. Last time i cleaned up i tapered over 18mths cutting my methadone right down to 0.5mm. It was completely painless. That was approx 4 yrs ago not and i am still clean. :-)
Alternaltely you may just feel need to get it over and done with quick in your holiday period which may be right for you.
I am simply highlighting that is is sometimes best to do what is right for ourselves rather than feeling that we 'have' to take a particular course of action.