slow down return to standard layer with layer picker

hey im creating a puppet that has 2 phases one that is idel and one that is talking. Im using layer picker audio so that it standards on idle and moves to talking when i talk. However the puppet flips back to quickly to idle when im talking which makes it look weird is there a way to make it so that layer picker stays on the talking layer for a few seconds before switching back to idle when it receives input?