It looks like the Tuesday flights operate at the start of the season in December for two weeks, are dropped in January, return for two weeks around February half term, and then stop after that for the rest of the season.
It’s less flights for the airport but it does seem more efficient from the airline’s point of view, hopefully the remaining flights are profitable if they’ve been kept.
At least they haven’t pulled out completely!
(crossing fingers that those words don’t come back to haunt me!)