Is it possible to start a VET Board Developed Course in Year 12? (1 Viewer)

[CupcakesTasteLikeViolence]

I'm not sure if it's too late to do so, but I want to swap one of my subjects with Info Tech/Enterprise Computing, (note that I'm also doing English Studies (cuz im too dumb to do standard >_<) - however, I am going to enroll to do the HSC exam)
I'm wondering if it's too late to do that, and would doing that make me ineligible for an ATAR (since I'm doing two VET BDCs?)