I agree with Sienne, I would work the shot back as you can over the holidays. Get some +10 and +11's and post here for advice. Depending on numbers, you might be able to shoot an hour early some cycles. Even with shooting on time but 1/2 hour early per day, you'll be back on time in 4 days. I would not play with size of doses - there is very little experience here with that. I used to move Neko's dose around quite a bit for holidays, sporting event, evening meetings, whatever.