Reporting periods for the Marie Curie Individual Fellowship

Dear all, I have been reading about the reporting in the MSCA, but I still can figure out if for the IF we need to send periodic reports. I know about the participant portal's continuous reporting section, although I still haven't filled in all the information. I have been a fellow for 6 months now, and I was wondering if I have missed any reporting deadline... Is there any report that should be sent besides the final report? Which are the reporting periods? Thank you very much! Regards, ioar