Thanks, Fidgetbuzz, for explaining a bit more of the situation. My views are also very similar to yours and those of other subsequent posters.
I think that Steve is on the verge of a great achievement, riding himself into fourth or fifth place on the all-time list, despite having had lots of time off with a broken ankle. Over the last few days, I've firmly come round to the view that he would be best advised to leave it at that for now, stop riding on 31 Dec, and get back to normality. At that point, he could also start the proper planning needed for a future attempt - if he still wants to have another go and, indeed, if he still wants to do any more cycling in the forseeable future after this year.
I am also concerned that Steve, with no outside counsel, could otherwise ride himself into a state of poor physical and mental health, to his long-term detriment. From the outset, I felt that the end of the attempt - be it successful or not - would potentially be a difficult time for Steve (and raised that with FB as something we should all have in mind a year ago when he was working on setting it all up). I also believe that those of us who have encouraged and supported him - financially (I speak as a sponsor) and by otherwise encouraging him to do this - owe him a duty of care by encouraging him to stop when it seems the wise course of action.