I chatted with them a couple of weeks ago about a tour in October. They are making lists for each day and tour. When they have enough people interested, they will contact those on the list to book. They don't want to have to accept reservations and then refund money.
Bayeux Shuttle is taking reservations for their tours and you can book online. I chatted with the owner last week and he said that the tours will run every day. My tour only has three people signed up, as of now, but he said he will run it with only 3 people.
He also said they were not offering the full range of tours because they took a big hit with Covid.