A doe that kids, milks ten months, gets bred back, and does it again without a break wears out faster than one given a rest.
I dry mine off and give them a couple of months before breeding. The udder tissue recovers, she puts condition back on, and the next lactation starts stronger than it would have otherwise.
Suzana is three months into this one at a gallon per milking. $400.
The ewe lambs are five and six months at $250. Ram lambs are six to eight months at $200.