I believe @Roving Jacobs was milking her sheep over the past few years. You could do a search and find her threads on it. I'm not sure if @Sheepshape or @mysunwolf milk their sheep. Seems to me I recall at least one other but can't recall who it was.
I believe if you wish to milk, you'll want to start sooner rather than later as the ewe will only produce what's needed and the lamb will need most of what's produced the first few weeks. so if you're not milking, her production will adjust down to satisfy what's needed by the lamb. I'm not really sure... 

Should I supplement?
She was rather weak at first and mom's teats were humongous so she had issues nursing, but has now figured it out and is much stronger and doing great! Pictures coming soon! Named the first lamb Bria after all, she is doing fantastic and is huge, especially now that we have a very small newborn to compare to!