WHEN TO SWITCH OBJECTS
Yogi: Whenever the mind touches the object and it overwhelms the mind, it means that it is not the right time to observe the object. Is that correct?
Sayadaw: If the mind is overwhelmed, yes, at that time you cannot face it directly. Do something to help the mind, to calm it down by using a different object or go for a walk. When the mind feels more grounded and stable, then you can allow the mind to explore.
Sometimes, it might even find things out by itself.