I was due to take my DVLA blood test just before Christmas. I abstained for two months then drank a week before test so cancelled. Booked new appointment for 5th Feb. Got there Doctor was absent and no-one else could do the test. DVLA allowed me to rebook for the 28th Feb. Drank that night (10 units). Then drank again on the 15th Feb to the 18th Feb. 2 bottle of wines 27 units in total I think. Then today had about 9 units. Should I just cancel again?