U cant travel in 2AC cause urs is a wl 1 ask TTe before boarding that is there any vacancy left out of after charting due to non travelling of confirmed passengers regardless of class
Also if its ok with u to travel in 3ac then too ask TTe he might allot u a berth depending upon vacancy or clearance of rac which is less possible
But some hope might be there so better consult TTe before starting the journey if he tells he might allow u some seat after some stations passed...
more... then too some relief wil b in store 4 u
From my side best of luck and also post what actually TTe given seat u or not
Thanks wait for ur reply