
Sorry to hear of your losses - but as I keep saying (and have to remind myself too), focus on the ones which are alive.
If you have some combivit, or a vitamin/mineral drench, I'd give the ewe some of that. Bucks them up after a hard delivery.
As jaykay says, make sure the lamb has somewhere it can be safe but still with mum and where mum can see and smell it. Support feeding until one day you'll come to help and that lamb will have a nice full tummy. Another time you'll find mum and lamb curled up together. Then take lambie away and mum will nicker for it - job done, they can go out.
It may only take 24 hours, it may take several days. But they do pretty much always come around. I had one take a week and I think I had one take a few days longer - but unless they are actively harming the lamb they generally don't take long.
If you can, when you are helping the lamb to feed, position the lamb so the ewe can sniff its bottom.