What is re-registration in IGNOU?

It is the process of applying to IGNOU for the next semester online or offline and paying the amount specified by IGNOU based on the degree. Re-registration allows you to enroll in classes for the following semester to complete your degree.

There was also an offline process, but that letter was closed, so I'm not sure if they're still accepting the DD at the counter (RC) or not. I prefer to take online steps because they are simple and convenient. You can also do it offline if your study center's regional center is still accepting applications at the counter.

Also, if you do not fill out the re-registration form this semester for any reason, you can easily pay in the following semester.

There would be no problem if you returned for 6 months. So don't do it. Costs vary depending on the courses you choose.