I don't think FiFA have any rule to disallow this.
You want that the span of a T11 season will extend to a full calendar year, T11 teams will play 2 matches in one calendar week, and managers will have 2 calendar months to build a team?
BTW, I believe that this thread talks about forbeiting matches because one of the team has less the minimum required number of players. No match have been forbeited because any team play consecutively for 28 days.