It would take time for their plans to infiltrate a Russian chemical weapons storage facility to be laid by the more senior Order members involved in the mission; first they had to find it, and then figure out how to gain access, which involved creating a delicate web of obliviates, stolen memories, and carefully placed Imperius curses, amongst other preparations. They expected it would take several weeks for the mission to be a go, and until then everyone going on the Russian base mission, as they referred to it, had some much appreciated downtime, more or less. Or as close to downtime as the war would allow for, at least.