Will a foot stress fracture heal if i walk limitedly on it?

yes: It is wise to avoid nsaids like ibuprophen. Listen to your body and limit weight bearing. The walking boot will help. It takes 8 weeks to heal a fracture. Lower stress by visualizing positive experiences to increase beta endorphins to protect stem cells needed for healing, get a good night sleep, eat 6 healthy small meals and exercise upper body 6 times a day for good circulation and nutrition.

Probably: But may heal badly in terms of pain and function. All fractures can heal, but proper alignment early is important. Depends on which bone also.

MAYBE: It could heal; conversely, it could evolve into a complete fx. Calcium level, vitamin D level, smoking all influence healing.

Yes: Although this is somewhat of a generalization, most stress fractures heal by reducing the level of activity down from the level that produced it. A person that is an avid runner and gets a stress fracture, may have to reduce their running but can certainly walk. A more sedentary person may need to use crutches if they develop a stress fracture. I would discuss the specifics with your doctor.