As per the new rules declared in 2018-19, you must clear a total of 179 credits (regular) and 129 credits (LE) to get your degree. If your total credits are greater than the above-said criterion, you can definitely skip the extra credit subject if you want to. For example, if you have a total credit score of 182, then you can willingly skip 182-179=3 credit subjects.

• You need to fill up an application form available in the examination department of your college. 
• You can skip only one of your exams in all 4 years. Moreover, you can skip the subject only when you pass out.
• To know about your total credits, download the syllabus for your branch, go to the eighth-semester syllabus and check the total credit points from the Total Cumulative Points written over there.
• For the lateral entry students, add the first and second semester credits of first-year and subtract them from 179. The credits of (179-1st year credits) are the minimum credits, say X. Now add the credits of each semester starting from 3rd to 8th, say Y. So now, you can skip Y-X credits.

Now, suppose you have skipped one of your exams. The SGPA calculation on skipping the exam would be as follows:

The credit points per subject (CP) = Score* Credits of that subject

Credit Index (Sem)(CI)= Sum of all subjects*CP

Total credits (TC)= Total credit of each semester (Exclude the credits of the skipped subject)

SGPA=CI/TC.

This would be the new way to calculate your SGPA, once you skip an exam.