Is OSAP eligibility affected by RRSP contributions?

My kids are getting into the highschool age where considering paying for university/college is becoming a more pressing concern. We have some RESP money, but that is not going to cover the full expenses and some loans are going to be needed. I have some extra RRSP contribution room and looking at how and when to best use it.

Since OSAP expects parents to pay for post-secondary and takes that into account for eligibility, will contributing a larger chunk to RRSP reduce the income from OSAP's perspective or will they only consider the original income?