I have no experience of drying off a ewe straight after delivery as I have only once been in your position and then I adopted on a Texel lamb to the Hebridean ewe concerned. Hopefully someone else will have some ideas but I am thinking along the lines of restricted dry feed ie hay, plus an antibiotic if there is any redness or heat in the udder at all - ie watch out for mastitis. This is likely to be a problem so a different solution might be better, so......
.. your best option is to foster on a lamb so you would need to find one quick.
In the meantime you could milk the ewe by hand. This will get her used to having her teats touched and may help with the adoption once you get a lamb. It's easiest to milk a sheep with her sitting on her bottom and aim the milk into a bowl, but if you want to adopt onto her it's best to milk her standing up so she gets used to being touched whilst in the correct position (agony on your knees and back though).
If you decide you don't want to adopt onto her but want to reduce the risk of mastitis, you could milk her to make cheese, or just for drinking milk, and gradually reduce the amount you milk her to reduce the amount she produces, so she can dry up naturally with far less of a risk of mastitis.
Adopting on a lamb is possible using the skinned method, but only soon after lambing (we have done it - it's quite funny once you get over the gruesome aspect). Another way is to shoogle the lamb to be adopted around in a bucket with the afterbirth, but again only when it's fresh and warm. What the ewe wants is to smell that the lamb is hers, from both ends. Rubbing her milk all over the lamb, especially over it's head works well but needs to be repeated - it leaves a horrible mess on the head but that doesn't matter. The other end has a delay to it, as the lamb will only smell of the ewe once her milk has passed through it. If she still has a residue of placenta/birthing fluid around her back end you could rub the lamb against that.
Some ewes accept adopted lambs quickly, others resist for a couple of days and need to be tied up so they can't kill the lamb - you would need to be there to supervise.
I have heard of people spraying perfume or something else which smells strongly around the ewe's nose so she can't really smell anything.
My goodness Andy - you need some nice easy-to-care-for ewes like Hebrideans
