PE Internship Advice

Hi all, 

Currently a summer analyst at an MM pe firm. So far the job generally consists of looking through CIMs that come in and creating a write-up to be used if each opportunity is worth further pursuing. Sometimes after I've finished my available work. Generally, when finished with one task I'll ask for another and if the entire team doesn't have anything available I find myself a bit unsure how to spend my time. As of now I've been going through old modeling tests/past materials and practicing summarizing but I'm wondering if there's anything else I could be doing to maximize the experience. Any advice would be appreciated, thank you.