Bunny respiratory infection?

I just got a new bunny, he's a 3 month old Holland Lop. I noticed that he's been making congested noises and he's been sneezing quite a bit. His nose is not very runny, but I'm pretty sure he has some sort of upper respiratory infection. I don't know how long he's had it- I think a few days. Will he be okay if I can't get him to the vet until Saturday?