Participant esign session

Hello, We have a condition where a participant goes to eSign, then quits mid-way. So for instance we have 3 forms to be eSigned, she eSigns 2 forms and quits. When she logs in again, we have to get the session token again - by sending a new packet. We cannot store the session token because the session token expires. Is there a way to get a session token with out sending a packet? Or is there a way that the session token expiry can be prolonged to say - 3 days - that way the participant has 3 days to finish the eSign process? Thank you