As a language teacher, how does it feel to learn another language? Well, let me tell you. My experience is as good as yours! I can totally relate with anyone who is learning a language. I used to study Japanese and boy was it tough!
I studied the language for two semesters at university and another one in a short course in 2010. Let me just say right off the bat that it wasn’t easy! On top of learning the vocabulary and grammar, I also had to learn the writing system which includes the syllabic scripts «hiragana» and «katakana», and the adopted Chinese characters, «kanji». Just like you, I also had a lot of questions about grammar such as why there are past forms of adjectives and which particle goes with what word in the sentence. The list goes on. But as I was determined to finish the course and make the most out of it, I persevered and attained some success. I didn’t solely rely on the course. I made my own effort to acquire the language. I would download audio files and listen to them on my way to university. I watched anime and Japanese films with subtitles. I also trained my mind to think in Japanese. All of these paid off. I learnt Japanese in a short amount of time.
Although I haven’t used the language for several years now, I still remember how to write the characters and recognize some words. This is the same for all of you. If you don’t use the language you’ve learnt for a long time, you’ll eventually forget it. Someday I’m going back to learning Japanese when I get more free time. As for you, I hope you don’t lose this chance to continue learning English and be proficient in it someday.