I am new to owning lambs and have bottle raised 2 of them from 2 & 5 days old. They are now 8.5 weeks old and are very close to being weaned. They are eating hay and drinking water well. I know I should supplement grains, but what exactly can I mix up and feed to them? Should I buy a bunch bulk and mix it up or just buy pre made sheep feed? Any information is appreicated. Thanks