Hi Sweta,

As mock test is a type of virtual exam only, so it is better that when you have prepared well, then only attempt mock test.

Just after Previous year papers you should attempt one or two mock tests to get an idea of the exam. And, when comes near you should practice as much mock tests as you can.

You can also do them early but doing it when exam comes near will build confidence in you.

Feel free to ask doubts in the Comment Section.

I hope this information helps you.

Good Luck!