You shouldn't look at it as problem, but rather as something you correct by practicing anatomy itself. You will get better little by little, but keep in mind, be fully immersed in it. Don't get distracted by external noise, focus. Also, problems create more problems and depending on your other beliefs it might slow down your process of learning. Learning process is psychological on many levels. And you're young, create some sort of plan in your head what to study and how often. Don't just randomly jump to drawing anatomy. And put more focus on parts you aren't good at yet. It forces you to go outside of comfort zone. Kinda sucks when you start, but eventually you'll enjoy it. Marc Brunet has awesome video on how to learn faster, "the secret rule to learn anything faster". He has very good points but don't take them word by word, go with what feels right to you and create new learning habits with information you already have and what he, or others, explain. If you wonder why some people learn super fast and others slow, it's about mindset, focus and goals.