The process has been explained to you (I explained it pretty clearly in my first response to you). We understand the process.
You seem to think it’s just a matter of Biden saying to the DEA, “Do it!”
You’re wrong.
No matter how many times you assert that Biden can simply order the DEA to reschedule cannabis, you’ll always be wrong.
As was explained in another comment:
The president can order the operations of federal agencies, but they can’t order specific procedural outcomes.
The power of the DEA to schedule drugs comes from Congress, not from the executive branch. Congress created the DEA to build process to review drugs and manage them. The president is in charge of executing that procedure, not changing it or skipping it entirely. The power to effectively make laws is Congress, not the president.
As weird as it seems, there isn’t actually a loophole where the president can order someone to change the law even if that person is technically their employee.