It’s little and often for newborns. 200ml is too much for one feed, you will overflow the abomasum into the other stomachs and cause digestive upset. Absolutely no more than 150ml per feed for the first 24 hours, and I would usually only give 50-100ml per feed. Less if I think it’s getting some from mum, better to give a little less than it would like than risk overfilling it. Feeds every four hours for the first 48 hours, can go down to every 6 hours after that, and can leave 8 hours overnight from about day 4 or 5.
But it’s a gazillion times better for the lamb to feed from mum, and second best to milk mum and bottle or tube the lamb.
If tubing a lamb which may be feeding from mum as well, use a gravity feed, feed a little at a time, and stop if the flow slows; the stomach is probably full. Never ever push, you really don’t want the stomach to overflow.