Lakin will stay with the Scottish Premiership side until 30 June, 2021.
Lakin started Blues first match of the season at home to Cambridge United in the Carabao Cup. And he was regularly involved in pre-season.
But his first team chances have been limited since and another spell of competitive action has been arranged.
Ross County are managed by Stuart Kettlewell and are currently eighth in the table. They lost 2-0 at Rangers yesterday.
The Highlands club recently signed ex-Blues youth Jermaine Hylton from Motherwell.
Last season Lakin made 25 appearances on loan for Stevenage, scoring twice, before football's suspension due to COVID-19 and then the ending of the League Two season.