It's neither too early nor too late to send your daughter to learn English, but I recommend you to choose online English education, because the child is only three years old, and it is bound to cry when sent to cram school, and it is also very troublesome to send the child back and forth to class. If you choose online, you can also study with your children. Although online education now says that it is ok to be 0-6 years old, children's understanding ability is still limited before they are three years old, so your child is only three years old, so it can be said that it is neither too early nor too late. If you want to consider online, I recommend you to consider Loki English. EF is a reliable organization like this (personal opinion! For reference only)