Reduce stress on the plantar fascia
Whatever the initial cause, your gesture placed significant stress on the plantar fascia. This amount of stress actually caused strain or strain on the ligament. This doesn't mean you have to stop running, but it stands to reason that you have to relieve the stress and strain on the plantar fascia ligament if you are to continue to do so.
Let's assume that you do not have a fractured heel bone (calcaneus) and that this is not a ruptured fascia. You may be active without the pain exceeding the maximum subjective threshold of 20% of what you can tolerate. See pain as a guide, a warning signal from your body. So you should listen to your pain and take it into account. Pain the next morning after exercising is a good indication that the activity has placed too much stress on your fascia. Reduce to an acceptable level.
The key, again, is to try and do everything in your power to speed healing, to make sure that you are reducing inflammation, and that you are truly monitoring your pain. To do this properly, keep a pain diary to check for swelling and see if the pain is getting better.
So that means you really have to be conscientious about anything you can do to improve it. Avoid all the things that will make the situation worse.
Strengthen the body, not just the foot
Finally, you should consider strengthening the rest of your body. Indeed, it is necessary to strengthen your glutes, your hamstrings, your abdominals, everything that supports you when you run. You want to work hard to strengthen these things so that while running, you don't lose your "shape" and put extra stress on your fascia.
After all, you wouldn't want to run the risk of injuring yourself again!