I have had two spells of being a shiner, first was from the mid 80s.
I started door to door canvassing in 1985 in one of the Worst Januarys in living histiory,i was 19 at the time.
There was snow thick on the ground and the temps were below freezing,but i picked up a hell of a lot of custies!
Mate , my advice to you is carry on regardless,and as another posters said,some shiners will be AWOL at this time of year.
Another plus would be,you limit the "please dont clean my windows in this weather" brigade,as clearly you started in the thick of winter.
As Frank said,make up a flyer with other aspects of your business like conny roofs, gutter soffit cleans.
Good luck with it mate,love your attitude,so much more refreshing to hear someone who wants to go out and do his own thing.
The world,country,government,society owes me a living lot,get right on my chest lol