Hi Dana @DSC1755, and welcome!
I started playing almost two years ago now, and I sure remember how it felt: many days I wanted to play more, but just couldn’t! Justin recommends absolute beginners practice 20 minutes per day. He suggests breaking that into two 10-minute periods to help with the inevitable finger pain. Also, especially for us older folks, this makes it easier to build strength in our hands while avoiding overuse injuries. Even if you haven’t watched all the lessons yet, have a look at the Grade 1 Module 1 practice routine. There’s good info there!
EDIT - Oops, I just realized this thread is for the practice routine. It might be worth reviewing the text on the website, and maybe even the lesson, to internalize Justin’s guidance. 
And if you’re inclined, introduce yourself over on the “Older guitar students - can “old dogs” learn new tricks?” area of the community. You’ll find well over 200 kindred spirits (including me) over there!