Hello Aspirant,

Hope you are doing well!

Well dear,the CBSE improvement exam can be given only once in the preceeding year of passing,and only in the condition you have passed in particular subject,

if you have not passed in a particular subject then you cannot give the improvement exam,you should appear for a compartment exam then.

So,Sorry dear you can't give the improvement exam consecutively for the second time,

Hope this was helpful to you!

All the best!

Keep Smiling :)