Hi
as i was reading the opening post I was thinking 'reduce numbers', I still think thats the way to go, it may not seem like numbers is an issue, but I'll bet just reducing to half will lift a lot of stress. Maybe in time let them increase a little again, seeing how you feel.
Getting someone to look over them a few times a week may also just give you that few days 'half break' and breathing space.
I think we are all the same, could manage with less, but couldn't live without them, (well admittedly mainly goats in my place), but I understand how you feel, not enough hours in the day (or maybe too many?
).
My sheep come to the bucket as well, but I have to catch them to take to a friends for shearing, that will be interesting!
Good luck with whatever you decide.