No, its not mandatory to complete the internship in 15 Days. Our Internship is Self Paced , meaning, learner can learn at their own pace and at their convenient time, that's the reason we have not restricted the content access for Premium & Pro Enrollment options, internship can be viewed any number of times and currently we have provided Unlimited access. But the certificate will be issued for 15 Days from the Date of Registration. Even after 15 days, internship will be available under your account -> under My Internship .