I have discontinued 2nd puc in 2017and now (2019) I want to join for Diploma this 2yrs distance matters or not? To join Diploma?

Dear Sahana, It doesn't matter why the age gap is, you can still go ahead and pursue the Diploma you want to complete. But as a suggestion, I would recommend you to complete of all the papers that you have left in complete from your 12th it will not only help you fetch a better Diploma but also wi