While Billy Davies took some positives from the way his side fought back from two goals down against Reading only to lose late on, Millwall manager Steve Lomas was unhappy with his side's defending as they went down 3-0 at Leicester.
"Our home form has been good lately and we have to take the game to Forest from the first whistle right until the last," he told the official Lions club website.
Saturday's games in the Championship, meanwhile, led to two clubs in the relegation zone sacking their managers. Barnsley dismissed David Flitcroft after a 3-0 defeat at home to Birmingham City while Dave Jones exited Sheffield Wednesday as they lost at Blackpool.
Forest legend Stuart Pearce heads the market to be the next Owls boss.