Dice the carrots, celery and onion
Peel and cut the potatoes into 1" cubes
Zest two lemons before squeezing them for ¼ cup lemon juice
Turn the Instant Pot on saute and add the ghee to the pot
Once the butter has fully melted add the onions, celery, and carrots to the pot
Saute the veggies for 4 minutes, tossing frequently
Add oregano, dill, garlic, salt, and pepper to the pot and sauté for another minute
Turn the instant pot off sauté
Add the chicken broth, water, chicken breast, lemon juice, and potatoes to the pot
Give the soup a gentle stir and close the lid of the Instant Pot
Set the vent to sealing and set the Instant Pot to manual high pressure for 15 minutes
Let the Instant Pot come to pressure and then cook for 15 minutes
Once the Instant Pot beeps, manually release the pressure and remove the lid
Remove the chicken breasts and shred with two forks
Add the shredded chicken back to pot with the lemon zest and stir to combine
Serve the soup with fresh lemon and dill