Set the Instant Pot to SAUTÉ and add the oil. When the oil is hot, add the shallots, garlic, ginger and celery, and sauté for3 minutes. Press CANCEL, then add the curry paste, squash, soy sauce, and water. Set to PRESSURE for 3 minutes with a QPR at the end of cooking. Set to SAUTÉ once more and stir in the tofu, beansprouts (if using), sugar, and coconut milk. Stir until heated through.