Forest travel to Hartlepool on Saturday with the home side now four points adrift of safety after their 2-1 defeat at relegation rivals MK Dons.
Colchester (5 points ahead of Forest) are currently in second place and are away to 15th placed Bournemouth at the weekend.
Brentford (4 ahead) are away to Swindon, who currently occupy the last relegation place.
Barnsley (level points) are also on their travels. They face Blackpool who still need a point or two to be safe.
Huddersfield (2 ahead) have two games this week after not playing on Bank Holiday Monday. They face 16th placed Chesterfield at home on Tuesday and travel to bottom of the table Walsall on Saturday.
Swansea (1 point behind) are away to Oldham (4 behind).