
push hand into floor to protract scapula while maintaining quadruped position with opposite hand resting on back
Get down on hands and knee position i.e on 4 points ( both hands and both knees), hands under the shoulder and knees under the hip. Lift one hand off the floor and rest on back and push the other hand towards the floor rounding the shoulders, release the push to back to starting position and repeat.
Nothing here is a prescription. Your physiotherapist decides which of these are yours, and when.