Thank you for the welcome
My PT had provided me with roughly 20 stretches that have technical names. I do them daily and will list them all below, BUT PLEASE SEE A PROFESSIONAL FIRST BEFORE DOING THESE EXERCISES. I also walk with my upright walker and or pedal my Theracycle daily. I continue to do some light yardwork, but my posture fails when I try too much. One surprise is I can pedal my bicycle just fine. I am also doing some weight lifting to maintain strength. The most effective thing however is sleep. This is getting harder to achieve, but it does give me the capacity to stand up straight for longer.
PT Exercises assigned to me (please see your provider first):

Sit to Stand with Arms Crossed

Standing Row with Anchored Resistance
Standing Tricep Extensions with Resistance

Squat on Foam

Heel Raises w/Counter Support

Standing Single Arm Bicep Curl

Supine Bridge

Supine Bridge with Lateral Scooting

Supine Upper Extremity Roll

Bird Dog

Standard Plank

Push Up

Thoracic Y on Foam Roll

Cat Cow

Lower Trunk Rotations

Supine Figure 4 Piriformis Stretch

Corner Pec Major Stretch

TL Sidebending Stretch - Single Arm Overhead
Standing Hamstring Stretch on Chair

Supine Hamstring Stretch with Strap

Seated Thoracic Extension AROM

Tandem Walking Along Line

Backward Tandem Walking

Staggered Stance Weight Shift with Arms Reaching
Runner's March

Sideways Walking

Walking

Calf Stretch

Calf Stretch (edge of stair)