851/852/853 to Yishun Int but u have to walk from AMK Hub to AMK
Ave 6.
Take these 3 services to yishun town and take 858, 965 or 969 to
Woodlands.
I guess this should be the fastest since u r waiting 3 services
instead of 1 so waiting time is cut and besides, this route is the
shortest as compared to 169 route. (Around 16 stages in all as
compared to 27 stages for 169)