If lots of your players are getting injured you should try reducing the intensity of training schedules, other than that the only option you have is to give them injections if you get the chance
Defnitely reduce the weight load and also try rotating your players so none get too exhausted, I noticed that exhausted players get injured more easily, can't confirm that though, perhaps an older hand will confirm or deny that.
Not true, FMRTE can also do it
But to answer your question no,physios wont be able to reduce injuries. I think you have one of two problems. Either reduce the workload in training or ask to relay your pitch as a bad pitch can cause injuries if its not in good condition. Hope this helps