Passed Cognitive test.. S&D expectations / when do you hear back?

Hey guys, I just passed the cognitive exam for the LIRR last Thursday (1/23).

When should I officially hear back and get the information for the S&D exam? Also, what should I do to prepare for the S&D test? Is the wait time from passing the cognitive to hearing on S&D typically long? Thank you to anyone who responds in advance.