Hello,
As per your son's cut off, he might get admission to CSE/IT in CEG or MIT both. You can contact to any of the campus for the direct admission. They will suggest you the best option to grab a seat of your choice of course. They will also provide the admission process, which will make it easy for you to take admission there.You can also think for admission in Anna University.

I hope this helps you out, if you have any other query, please let us know,
Till then stay home and stay safe.