Ryanair are always late in loading there schedules from smaller UK airports , BOH is no exception
Last year they started to load there Summer 18 schedule on 9th Sept as was looking back out of interest
Ryanair have loaded Krakow for next summer which stays at 2 flights a week
EasyJet don’t start to load there summer schedule until mid Oct and then it’s only until about June 19
so I don’t think anyone needs to be duly worried