Need some help calculating Transit fares to go to university (OneFare?)

I am a TMU student and I was hoping to take a YRT bus to Finch station, then Line 1 to TMU.

I am trying to budget my transit costs but am confused whether OneFare would apply in this case.

Would my cost be

YRT-> Finch station $4.29

Finch Station-> TMU on Line 1 $3.3

For a total of $7.59/day

Or does OneFare apply here? How would that work and what would be my daily cost?

Thank you so much!