The Australian comedy duo, who quit their show earlier this year in order to relocate to the US for TV series Hamish and Andy's Gap Year, have still been doing their drivetime show on Fridays during their trip but will now allegedly return to five days a week.
Fifi Box and Jules Lund replaced Blake and Lee after they quit, but the Herald Sun reports that the station has suffered a drop in ratings since the takeover.
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Gap Year has been panned by critics after it pulled in an average audience of about 800,000 viewers per episode, compared to their 2.7 million listeners on their radio show. Austereo bosses now apparently hope to return the award-winning pair to their old positions by 2012.
Earlier this week, Blake and Lee revealed that criticism of their television show does not bother them.
Blake said: "I'm sure critics would love to think it really cuts deep and hurts you, but at the end of the day we are two best friends having a holiday and putting together a really fun show."
He added that the duo do take their jobs "seriously", but asked fans to "accept" that they "put [themselves] out there" and like to go with their "instincts".
Lee also said that he appreciates "feedback", but reminded critics that they have "been in the industry for ten years".
Watch Hamish Blake and Andy Lee interview Sarah Jessica Parker on Hamish and Andy's Gap Year below: