Adults constantly raise the bar on smart children, precisely because they’re able to handle it. The children get overwhelmed by the tasks in front of them and gradually lose the sort of openness and sense of accomplishment they innately have.
When they’re treated like that, children start to crawl inside a shell and keep everything inside. It takes a lot of time and effort to get them to open up again. Kids’ hearts are malleable, but once they gel it’s hard to get them back the way they were.
Children who excel in life are those who are challenged by their parents. You need to raise the bar on your child and to constantly challenge them. You never know what they are capable of if you never challenge them.
You can be there should they falter or fall, but when they know you are there to back them up, they are more likely to dust themselves off and try again.