Meanwhile, opponents Rovers halted their four game winless streak with a 1-0 victory over Birmingham City in midweek, and they went to the City Ground in high spirits.
Despite their recent struggles, Forest did take the lead in the first half as Matty Fryatt turned home after Britt Assombalonga's effort had hit the post, and Stuart Pearce's side went into the break leading by one goal to nil.
But there was a familiar sinking feeling after the break, with Alex Baptiste's equaliser sparking a bizarre 11 minute collapse from Forest.
Rudy Gestede but Blackburn in front with just 15 minutes to play, and the defensive woes continued just two minutes later as Jordan Rhodes ended his personal goal drought with the killer third goal.
The honeymoon period for Pearce appears to be over at the City Ground, and with seven games without a win, the pressure is slowly building on the former England international.