Just switch over the remainder of your planned running sessions to mountain biking, skiing and snowshoeing. That will require a few extra hours of training, since the biking doesn't burn calories (kilojoules, I suppose, for you Canadians) as fast as running, so the extra 20 minutes a day needed to boost your exercise hours enough to meet your preset goals in the last quarter of the year should come quite naturally. It's not unreasonable your expectations would be off at this point--who would have ever guessed that last winter would be such a total loss as a ski season?
I have one more running race this fall, then I'll be doing all that good stuff. You're right that last year's poor ski season meant more winter running, which is a big reason the ratio is skewed. In general, I'm training less than hoped though, and that's the bigger problem with my goals. I missed the same Total Hours goal in 2015 but had hoped this year would be better.