I guess it depends on the individual ewe. We had a Ryeland successfully raised triplets last year with no help and I have two sets of triplets out in the field this year, with both ewes coping fine. I have another two due to have triplets still in the shed. I am feeding the ewes cake and will until the lambs are four weeks old or so. Some of thelambs that are a week to ten days old are starting to nibble at cake themselves but they never seem hungry.
Again bagging up depends on the ewe; I have some bag up early, some almost at lambing.
Sorry, that's not much help but I'm glad your lambing went well thsi year.