Yeah! after your Diploma in Computer Engineering you can take admission in BTech/BE course such as CSE, CSE with cyber Security etc by qualifying the lateral entry exam organized by your state. If you qualify the lateral entry examination then you can directly take admission in the 2nd year of BE/BTech. In Maharastra there are no lateral entry examination organized by the state but you can take admission on the basis of your merit marks gained in Diploma.

For Lateral entry examinations visit the link below:

https://engineering.careers360.com/articles/what-btech-lateral-entry-eligibility

I hope this answer helps. All the very best for your future endeavors!