In my opinion, your ticket seems difficult to get confirmed as it show that only 1 berth is allotted from NDLS to DHN in 2A. In SDAH Rajdhani, 4 berths are allotted.
1) If date is not an issue, then book from NDLS to DHN in 12314 SDAH rajdhani, next day, i.e. 11/Nov it is Avbl 4 in 2A. You may get berth of your choice.
2) If train is not an issue, then book in 12382, Poorva Express, NDLS to DHN, it is available 39! You will get berth of...
more... your choice.
3) If fare is not an issue, then book in 12302, NDLS to HWH (end to end), many berths are available. You will get berth of your choice.