Kunal, WBJEE is conducted by West Bengal Joint Entrance Examination Board. They do not release the dates 2-3 years earlier. The official schedule is released for that Academic year during September of the previous year. For example, for WBJEE 2020, the registrations were open from October while the exam will be held in January. The schedules will not be released 1 year or 2 early. But considering the trend, every year, the application forms will be released during the month of October and so the same can be expected for the years 2021 and 2022.