Dear Student,

Actually you have options to pursue Diploma in Engineering in either after 10th or after 12th. Syllabus will be the same, pattern will be the same no difference. Now its up to you whether you want to pursue Engineering diploma after 12th or after 10th.

I would suggest that at first you should complete your 12th then you can choose any other path, because in most of the exams they will ask you for the 12th certificates and if you don't have then you will not be eligible. But the decision is up to you whether you choose diploma just after 10th or after 12th.

As currently you are in 12th so better if you complete your 12th first.

Good Luck :)