We restrict how many times you can try password recovery via email, SMS, or Account Recovery form in order to safeguard your account. Once an option for recovering an account is used incorrectly too many times, Google temporarily blocks it. The date listed underneath that recovery option is when it will be re-enabled.
Source: https://medium.com/@fixxnotworking/how-do-i-get-a-human-at-google-48bfdf41f716