My symptoms match this exactly:
Diabetic Proximal Neuropathy
Diabetic proximal neuropathy causes pain (usually on one side) in the thighs, hips, or buttocks. It can also lead to weakness in the legs.
Exactly that - I would wake up OK, then, as soon as I tried to move the pain set in & I could not move my right leg by its own muscles. I had to move my legs with my hands before I could sit on the edge of the bed. I could then move about, but stairs were painful. I feared I was becoming disabled.
That's when I found this forum.
Treatment for weakness or pain is usually needed and may include medication and physical therapy. The recovery varies, depending on the type of nerve damage. Prevention consists of keeping blood sugar under tight control.
I am going to have to bring it up with my GP, I just hate keep going to her with the endless problems I seem to have had lately, before diabetes diagnosis I only went there once a year for health check ups