Start by setting your Instant Pot to the sauté function. Add 2 tablespoons of avocado oil to the pot. Once the oil is hot, add the chopped beef chuck roast in batches. Sear the beef on all sides until browned, about 3-4 minutes per side. Transfer the browned beef to a plate and set aside.
In the same pot, add the chopped red onion and minced garlic. Sauté for about 2-3 minutes, until the onion becomes translucent and fragrant. This step builds a flavorful base for your shredded beef.
Next, sprinkle in the chili powder, ground paprika, dried thyme, and sea salt. Stir well to combine with the onion and garlic, allowing the spices to toast for about a minute.
Pour in the beef bone broth and orange juice, using your wooden spoon to scrape any browned bits off the bottom of the pot. This deglazing adds even more flavor to the dish.
Return the seared beef to the pot, along with the optional coconut sugar and fresh lime juice. Close the lid, ensuring that the valve is set to sealing. Select the manual or pressure cook function and set the timer for 60 minutes.
Once the cooking time is up, allow the Instant Pot to naturally release pressure for 15-20 minutes before switching the valve to venting to release any remaining pressure. Carefully open the lid.
Remove the beef from the pot and place it on a cutting board. Use two forks to shred the beef into bite-sized pieces. Return the shredded beef to the pot and stir it into the juices.