That is Suvarna strategy.. They r trying to retain those minimum viewers for this new serials. Also shifting to other slots will also watch that too. Same thing happened for SMM, BBB, SSS etc. That's how they got TRP of 210k before lockdown from 145k.
So mahabharat and radhakrishn are working really good for suvarna.....mahabharat will get highest ratings when draupadi enters and during vastraharan scene i hope star suvarna will reduce its airtime to 1 hr so that they can run this show for some more time