It just makes it worst for next year, as I and other spring calvers have said ,is to not have April, May and June to count towards to A total, so you could drop litres and not feck up next year,Anybody else thinking of starting 10 in 7 milking in April to reduce the number of litres and thicken up the milk to try to avoid 20ppl milk.
My autumn curve is only likely to have a problem April unless may is really milky.