No - if you're a student attending classes more than 8 hours/week, you cannot gain residency in OR even if you get a job, file taxes, change car registration, etc. OR is very strict about students moving here just for in-state tuition, so you have to prove your main focus being here is not school by not attending for more than 8 hours a week. Your only option would be to live here and work for 12 months before acceptance. Sorry 🙁
EDIT: Just re-read your post and I may have misunderstood - not sure if you planned on applying as in-state after your first year of vet school or moving gaining residency, and then applying.If you choose to move and apply next cycle, do it soon. That will give you time to establish yourself and find a job and work for 12 months before the application is due. Job market is stinky up here (as it kind of is everywhere, I guess) so be prepared.
I am not a vet student, but I am an AnSci grad student doing a thesis that collaborates with the vet school. I'm taking some vet classes over there as well and enjoy the small class size and the professors I've had. Facilities are new and Corvallis is a good-sized town surrounded by farmland, so good small and large animal opportunities.