Progress update 1 week of doing prescribed exercises:

When doing hip hikes and mini lunges my left (uninjured side) is significantly weaker than my right
When I single leg stand on my right, everything looks and feels good.
When I try on my left, my body shifts out over my foot (to the left), if I squeeze my glute, this almost corrects it.

Right glute medius is still sore, especially when the waistband of my trousers presses on it.

Not done any other exercise all week.

Just been to see physio again, he wants me to continue the strengthening exercises for another couple of weeks, then see him again.

Thoughts:
I feel that sorting my glutes out will address the cause of my problems, but I am concerned that I am still not doing anything to fix the tendinosis.