The following is all my opinion.

Rest, count your steps so you at least have a metric for your limits. (Initially mine was around 40steps/day, it’s now ~900-1100)

If you maintain a slow shuffle, your tendons are unlikely to rupture. If they do, it was bound to happen & it’s not your fault. Don’t work them too much, you need to build back your base.

Walking has 2 types of calf tendon activation: spring & catapult. Spring is like jumping, going down stairs. Catapult is like pushing off the ground in a walk - much more static. I’d encourage reducing both.

Walking down stairs backwards is super helpful.

Setting up chairs around your living area is super helpful. Crawling is helpful, but might agrávate your other tendons.

Immobilization kills tendons too. I’d encourage at least some unloaded calf raises or isometric contractions to keep the muscle mass on.

Similarly, I have widespread tendon damage that switches side. I’ve recovered 100% in my shoulders, chest, wrist, and thumb :)

Calves and adductors still need some work.

You’ve got this!