Initially, they were running in shifts of half an hour each, before switching to blocks of two hours during the day and four hours at night.
While one was running, the other has been eating or sleeping in their camper van, driven by someone else.
Joe said the night shifts were “tricky to tackle, but we’ve got through plenty of them now”.
Asked what was the most amount of sleep he had had, the Worcester resident replied it was “in one go probably about two hours 45, maybe three if we’re lucky, but it’s not real proper sleep”.
Joe admitted the challenge was “a lot tougher than I thought it’d be, maybe that’s very naive of me”.
Temperatures were about 27C or 28C in Worcester and Joe said they had “tried [to] turn the shifts down to like quicker changeovers, at half an hour, 45 minutes, rather than an hour and a half”.
“But I’m glad it’s towards the end this heat and not at the start,” he added.