"We need to start performing when we are under pressure," he said after defeat last weekend and then an abandoned midweek fixture pushed the Bees back into League Two's automatic relegation places ahead of this Saturday's visit to Sixfields.
"No-one is going to help us, apart from ourselves."
Northampton will be out for revenge for one of the low points of their season to date, November's 4-1 hammering at Underhill.