Midfielder Matty Lund and striker Steven Davies have started light running after their knee injuries, while Joe Bunney (metatarsal) is also making progress.
Hill is keen for his side to keep in touch with the play-off picture before his injured players can return to help the late-season push.
Midfielder Peter Vincenti came off the bench for important minutes in the midweek defeat to Bolton after missing last weekend.
Charlton forward Ezri Konsa picked a knock during the Addicks' defeat against Oldham, but should be fit to start.
Midfielder Nathan Byrne serves the final game of his three-match ban, while Jake Forster-Calskey returned from an ankle injury on Tuesday and should keep his place.
Forwards Lee Novak and Tony Watt are pushing for recalls.