It sounds to me like you were getting overwhelmed. Did you end up finding a practice rhythm that worked well for you?
For anyone out there struggling, my advice would be to take a big breath and a step back. It is a lot to cover and when it is new it might feel too intimidating and hard to keep in your head all at the same time but as time goes a lot of that becomes handled by your brain in the background once you get used to it. It's like learning to drive any vehicle for the first time.
If there's a lot to focus on, I would suggest choosing the top 3 things you think would be better. Reducing the radius of things to keep track of, might help you bring back the concentration. Another idea is to find slow beats of something you are interested in learning, so you can bring back a bit of spark to your motivation.