Hii,

Many universities and colleges offer part-time or distance B.Tech programs especially for diploma holders. This is often called a Lateral Entry program, where you can join directly in the second year of B.Tech, so the course duration will be around 3 years instead of 4.

Since you passed out a long time ago, some colleges might ask for a few extra documents or conduct a small test or interview, but that depends on the institute.

You should look for AICTE-approved colleges or universities that offer part-time B.Tech for working professionals or diploma holders. Some popular options include IGNOU, KSOU, or state technical universities.

Also, make sure the course is approved and valid for future jobs or promotions.