I shouldn't really say this with this much certainty but its practically impossible to get a 3A or 2A ticket confirmed from here on in Avadh Assam.
There's a feasible chain if you're OK with it.
Delhi Anand Vihar- Moradabad in 12040 Kathgodam Shatabdi.
Moradabad - Shahjahanpur in 13152 or 15654.