A big part of 3rd year is learning what questions/physical exam components/lab tests to ask/perform/order based on the patient presentation. After a couple months this will start to sink in. Your review of systems questions will typically be based on the patient presentation- however, at the beginning of the year it probably wont hurt to run through an entire ROS (ask 1-2 questions for each system). For sure, always listen to the patients heart, lungs, bowel sounds and do a simple cranial nerves test. Try to use your best judgement on what other things to do. At the beginning of the year everyone should know that you are just starting out and wont be too hard on you.
Your ROS should be cursory.
Before you enter a patient's room, you should at least have some idea about the differential diagnosis for their chief complaint. Even a brand-new MS3 knows a few causes of chest pain: GERD, anxiety, AMI, pericarditis, etc. You should tailor your HPI to exploring the top three or four items on your DDx.
I agree that you can do the ROS in less than 3 minutes if you ask only one or two high-yield questions for each system:
"I'm going to ask you some yes/no questions to make sure we haven't missed anything. Let me know if you've had any symptoms since (chief complaint) started.
Fever or chills?
Headaches, altered vision, or slurred speech?
Chest pain or pressure, a racing heartbeat, or swelling in your ankles?
Shortness of breath, a cough, or wheezing?
Nausea, vomiting, or diarrhea? Blood in your bowel movements?
ETC ETC"
Then again, these items are pretty non-essential. The best ROS focuses on narrowing the DDx.