Take trains by Making chain
Goto ASR by Evening Shatbdi,then take night BTI-JAT expree till PTK
You can also go Via BTI using 12481 (atleast 2S tickets available and 3AC in BTI-ASR Express) but Buffer is less
Or Take Morning Shatabdi Till LDH (via ROK - Reservation easily available) and take a connecting train or bus from LDH to CHKB