Do you have confirmation of that? It seems to be the case now but we aren't really sure whether they will later change the schedule (as they often do) to utilise the usual five aircraft. It does seem strange only having two because what will happen to the Bristol based crew? Probabaly quite a few relocation of jobs to other UK airports I would imagine.
FR do lots of schedule changing but they are not going to make such a mess of BRS schedule by mistaking it for 2 instead of 5 based. Not cuts is the main thing.