The English Football League has removed the need for clubs to test players for Covid-19 on matchdays in an effort to prevent late postponements.
The EFL accept the situation was not ideal and believe that testing every day, apart from matchdays, is enough.
Nottingham Forest's home game against Barnsley on Monday has been called off because of injuries and Covid cases in Steve Cooper's squad.
It is the 13th game in the EFL new year programme to be postponed.
Leaders Bournemouth against Peterborough United and Swansea City v second-placed Fulham had previously been called off.