H1B Transfer RFE Processing

Hi,

Filed for H1 Transfer under Premium Processing: -

Vermont Center
Receipt Dt - Dec 6, 2021
RFE - Specialty Occupation Dec 8, 2021
RFE Received by USCIS - Jan 13, 2021

Today is 8th Calendar day and still no decision. Are there any news of PP being delayed beyond 15 days? Is USCIS following 15 Calendar day rule as printed on receipt or they are following 15 business days?

@anil_am22

Thank you