I'm the bucket thrower here and I slowly build up feed when the twins come in, we tend not feed the singles hard feed but then they do have lifeline and sugar buckets all round. we have lost one very early on, she was very old and despite being under the vet we lost her. We have had no further tld ewes. We find the key is to keep putting the sugars in, keep groups small, we had a batch of thirty, and plenty of feeders in with them, as I think the stress of getting to cake/nuts can also kick them off too. We keep collate drench in the box and also have thanks to the vet a big bottle of propyl glycol to hand and also I have some glycerine bp.