Forcibly restoring the factory settings can cancel the healthy use of the tablet (student mode), but all personal data in the tablet will be lost. Or send the tablet to Huawei's official service store, request to reinstall the tablet's reloading system, and then you can turn off the healthy tablet function.
By using the tablet healthily, you can always know the time you spend on the tablet. You can also set the tablet's availability time, application usage restrictions and downtime.