Before trying anything else, make sure your printing conditions are ideal. Sometimes, an elephant’s foot is simply the result of an unleveled build plate or an incorrect nozzle height.
Lower the bed temperature:
Incrementally lower the temperature of your bed by 5 °C until it successfully prints without any bulging. If you lower it by more than 20 °C and the problem isn’t improving, the elephant’s foot will likely be caused by something else.