Trains bound for LKO usually come at PF 1. PF 1 is both connected from GKP side and AYC side, as far as my memory goes. Infact, trains coming from GKP side and bound for LJN/LKO are processed at PF 1, updated at this site itself [case in point: Avadh Assam express for one]. You could argue PF 2 is a more natural candidate; in which case, just update it as 1,2 but until your train reaches the station, you can't be sure which of the two platforms it came on.