Hello Hailey M,
Welcome to the first roadblock in self-teaching yourself a language. This time period is what normally stops a lot of beginning language learners from going on to fully enabling themselves to becoming true masters of the language they are working on. I have been self-teaching myself using a variety of sources, one of which being Rocket Japanese, and I can tell you that even if you aren't sure whether or not you are learning, you are learning. However, one thing you need to just keep in mind is that it won't always be visible to you. Just keep going and eventually, whether it be from an anime clip you watch, or it be a sudden ability to understand a lot more on TV, or something else that involves Japanese... you'll randomly notice you understand a lot more than you used to.
Right now, your in a tough spot, you may not feel like you are learning a lot, but ever so you actually are learning a lot. Just keep going and eventually something will show that you are getting better and reignite that learning passion you started off so greatly with.
I know this feeling from experience from when I began as a Japanese learner and well now I'm starting to get on into more difficult and advanced topics. Hopefully I can end up going to college in Japan, but I have to study hard and keep going. Truthfully, the biggest thing you just need to do is keep going and the hard work will show itself in a matter of time.