My suggestion is to start at Justin’s beginner lesson 1, prove to yourself that you’re solid (may only take 1 practice), then move to the next one. This way, you expose any “holes” in your basic knowledge, as well as get your fingers and hands back into practice.
I had made it 1/2 way through Justin’s grade 2 before life got in the way and I stopped practicing for 6 months. I restarted at lesson 1 and was back to where I left off within a month or two, plus I found a few weak spots in my technique that I was able to quickly focus on and resolve.
Hope this helps 