I transplanted a Camellia in the middle of summer in California one time (it was in the way of a construction project).
I planted it in a shady spot, staked it so it wouldn't move and kept it moist. It took a couple years but recovered and is a beautiful shrub. I'm glad I made the effort.
If you lost too much of the root ball, and I can't imagine you didn't if your Camellia is 10 ft tall, I would prune it back a little. But no fertilizer. That will kill it for sure.
