Did this happen at first? If it just appears, it is still lucky, because myopia is not formed in a day or two, but recently, perhaps because it takes a long time to use the eyes at close range recently, which leads to eye fatigue. If you want to alleviate the current situation:

1 Develop good eye habits, sit, read in a well-lit place, and arrange reading time. You shouldn't let your eyes look at nearby objects for a long time. You should look at the distance or close your eyes every once in a while, often do eye exercises, and use hot towels to promote blood circulation before going to bed.

2 exercise, ball games are better for eye muscles and exercise is better.

Eating habits, don't be picky about food, eat more things that are good for your eyes, such as fish and kelp.

Go to the optician's shop or the hospital to check your eyesight.

No staying up late, basically no problem.