Does a five-year-old's astigmatism 75 degrees need to be rechecked

The doctor replied:

the astigmatism of a five-year-old child is 75 degrees, which needs to be rechecked every three months, because the condition may be aggravated. Long term overuse of eyes and long-term use of mobile phones are likely to increase the degree, and the child can be corrected by wearing glasses.