It's easier to do it from Fidelity but you should be able to do it from webull though I don't know how difficult that might prove. I ended up transferring mine from webull to Fidelity last year and IIRC it took like a week or so to complete. You have time so I'd do that tomorrow if I were you and then transfer from Fidelity if DRSing directly from Webull proves difficult.
It's easier to do it from Fidelity but you should be able to do it from webull though I don't know how difficult that might prove. I ended up transferring mine from webull to Fidelity last year and IIRC it took like a week or so to complete. You have time so I'd do that tomorrow if I were you and then transfer from Fidelity if DRSing directly from Webull proves difficult.