Yes, you can continue your studies.
But, first and foremost, you have to re-validate your registration.
IPCC registration or re-validation is valid for 4 years.
You can do so by paying a nominal fee of Rs. 400/-
But, remember that last attempt for old IPCC is May 2020, unless further extended.
Now, there will 30% MCQs in G-II, ITSM and Audit Paper.
But you should think positive and clear in the next two available attempt, otherwise you will have to shift to the new course after the last attempt gets exhausted.