Received $72K scholarship but commitment deadline is prior to RD decisions

hi! I was fortunate to receive a C$72K scholarship to go to UBC but I need to accept and commit to it before March 27th. I'm still waiting on RD admission decisions from UC Berkeley, CMU, Harvard, and Princeton.

It's a strange place to be and I know I don't really have much of a choice here but do any of these schools have a mechanism to hear back earlier or anything of the sort?