You currently have 4,355 XP and need 545 more XP to reach level 13. So after you do the 545 XP (lessons, stories, review etc.) you will get to level 13. Hope this helps! You're not too far, keep on learning and you will get there!
Keep going... never stop... study every day! You need to have a goal.. what is your goal? 300XP per day? 500 XP per day? 1000 XP per day? what is your goal? If you have goals, you will be motivated to achieve it
Carry on studying!
You don't use the app? I'm going through the french tree using the app on my phone. I'm closing in on lv. 17, and I still have around 20% of the tree left to do, and tons of review, as I am not past level 3 on most of the lessons.