This really needs to be slow cooked in a crock pot, not instapot, for optimal everything.
Onion soup mix
Beef powdered bouillon
Place roast in crock pot with 6 cups of water. Add carrots. Make sure the water reaches the carrots. Cook on high for two hours.
Add parsley and Garlic
Slow cook on low 4 hours or until it’s fork tender.
Then remove two cups of broth and set aside.
Add garlic, onion soup mix, beef boullion.
Mix corn starch with broth until it begins to thicken. Return it to the roast and allow it to slow cook another hour.
I’ve been making this for so long that I no longer measure. It’s ok, you’ve got this, don’t be stingy with the spices.