Querying Mixpanel API for Daily Session Counts: Options and Challenges

Hey there! I need to query the Mixpanel API for a variety of customer, ideally with as little customization as possible. Until now, I have been able to get the unique sessions count by querying for the $ae_session property count, but it looks like it's been deprecated because I have a customer that has integrated the MP SDK recently, and I am not getting back any data. Is there an endpoint / query that could allow me to get the sessions count for a day or a certain time period?