This clinical trial studies whether a tailored, web-based program (web portal), Community for Physical Activity and Supportive Nutrition Strategies (COMPASS), can be used to improve exercise and dietary changes in patients with stage I-III pancreatic cancer who are receiving chemotherapy before surgery (neoadjuvant). Pancreatic cancer is a rare and understudied cancer, particularly in the area of promoting a healthy lifestyle to preserve physical and mental well-being during a long and difficult treatment regimen. Since pancreatic cancer is rare, programs have limited resources available to reach the patients who could benefit from programs aimed at promoting exercise and a healthy diet. The COMPASS web-portal is easily accessed by the patient via a computer, tablet, or phone. It is tailored to the unique needs of pancreatic cancer patients and provides exercise and diet recommendations along with behavioral support as they undergo the long process of cancer therapy. This may be a more effective way to reach and engage with the patient, which may improve exercise and dietary changes in stage I-III pancreatic cancer patients receiving neoadjuvant chemotherapy.