sit back from quadruped position onto heels with arms extended to stretch shoulders and upper 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. Without moving the hands, sit back on the knees keeping arm straight, feel for the stretch on the armpit and HOLD. Back to starting position and repeat.
Nothing here is a prescription. Your physiotherapist decides which of these are yours, and when.
