Great Comet - 1/17-1/19

Hi - I booked a last minute trip to London, and now all the tickets are sold out for the dates of my trip (1/17-1/19). Does anyone have any advice for buying resale or last minute tickets? Has anyone been successful getting last minute tickets at the box office? I’ve turned on notifications for TicketSwap, but the tickets go so crazy fast 😭

I’ve been dying to see this musical ever since I missed its original Broadway run and would be super grateful if anyone has any tips (or an extra ticket 🙈)