We had a similar problem in 2017 - we had the opportunity to go to Australia for 3 months (no parents, no dog). Our house insurers (LV, IIRC) will insure for 60 days unoccupied, so we had to take a risk for about 23 days.
Everything except the electric was turned off (we have a chest freezer) and our neighbours were in most days to check. We live in a quite rural cul-de-sac in a low crime area, so for us it was not a major risk, IMO. Fortunately, it all worked out OK.