Fred, I am NWB and started physiotherapy a few weeks after surgery. The therapy was mostly ROM and moving my foot. However, now at a facility, and my physiotherapist only has me do NWB exercises until the doctor says otherwise. Then the real work starts.
If you have an opportunity. talk to your ortho about physiotherapy, we have to remember there are many different types of tibia platuea fracture and doctors may have different treatment plans for their patients.
My physiotherapist has me do glut and thigh squeezes as these are important muscles that will support the knee when one starts walking. – among other NWB exercises.
Good luck and hope your healing process is a success.