I have found many good leads for funding at this site: disabilityawards.ca
Don’t forget to follow up with the disability organization that supports your child in your province as well. For example, here in BC the Cerebral Palsy Association has bursaries for post-secondary students who have Cerebral Palsy.
Check out STEPS Forward as well, they have some great ideas: steps-forward.org
Finally, dont’ forget to take all the tax breaks you can to help fund your student’s education.