How Do You Extend The Session Link Expiration Past 30 Days?

Is there a way for data to be saved on session links longer than 30 days? 

The session will be available up to 3 months, this in case you have used the session method, here is a guide about it: https://www.jotform.com/help/97-How-to-Save-Forms-and-Continue-Later

The same should happen in case the feature is enabled for card forms. 

Unfortunately, there is no way to extend that time. 

The guide doesn't seem relevant. After doing some testing we've seen that our users are able to save & continue later without me creating two forms. I simply enabled the save & continue later option on my form and it sends the user a unique link. Is this correct? 

Will the session still be available for up to 3 months?

Yes, but that is only for card forms where it works with one form only, for classic forms you need to create two forms. The same period is for card forms so the data should be saved up to 3 months, it's not possible to extend that time.