I have had the experience of being sick and still studying. At that time it was to study English to prepare for the Grade 6 exam, and what I did when I was sick was to listen to English songs or use my cell phone by myself and put the days? English words? read them aloud, including the English pronunciation, the Chinese meaning, and the order of the letters, and then ? record it? If you are sick and can listen to the sound, just put on your headphones and listen to it. The result is not bad. However, since you are sick, rest well and don't overwork yourself. I don't care about anything, I'll go back to cramming when I'm better. Learning is a marathon, it won't be delayed just because you get sick once, just spend more time cramming. Some people, who learn English, are completely self-taught and do not rely on teachers. So you should have confidence that even if you pull down classes, you can make up for it through self-study and interest!
For things like learning a language, the main thing is to keep exercising every day, because language learning basically relies on accumulation and practical application, and only by synthesizing these two points can you learn a language well and use it well. However, no matter what stage you're at, learning is learning, and life goes on.
Since your body can't handle it, you'd better go and ease your body, don't think too much first, the first thing you should do is to get your body well, focus on achieving this goal first, and wait for you to get better before you do the rest.
In fact, there is no need to worry so much, after all, if only a few days delay, the impact will not be too big, at least for language learning is not too big, because language learning this kind of thing, basically is to forget to learn, learn to forget, and then in the learning and forgetting to have slowly improved.
If you feel better, then you can still find some English movie reviews or video footage, or find someone to help you download it, and during your own illness, perhaps according to your own condition, you can continue to learn in this way, and it's very helpful for English pronunciation and language thinking.