When I first got my varifocals, I went to a very large supermarket. It wasn't intentional, shopping was just the next the job on my list. However, in that environment, you are changing where you look a lot. Near, far, left, right, up down, etc. You have to keep changing your gaze. You won't get used to them in your home as you aren't getting the variations in vision.
For a few days, when out, I felt a bit like a robot, having to turn my head to look at things where I might have glanced sideways. But after that, it was fine. I got used to them really quickly and now have had them for 15 years.
My advice, is do something similar, get into a variety of environments, inside and outside. Accept it is going to be weird for a little while. I promise after a week or so it will be fine.