Today booked ticket in 13240 at 08:01 in 2AC from KOTA to PNBE for 7th November 2023, got WL21,WL22 now I'm thinking to book a backup ticket, so I'm thinking to book in 19669 from KOTA to PPTA on 08 November 2023 at dot 08 a.m. Is it a good plan for a backup or not?