My 5 month old ND buck can almost reach my yearling Nubian. Your LaMancha most likely won't get pregnant anyway, they are strictly seasonal breeders. I think tonight I will get the teensy dude on a straw bale.
Yep, all dairy breeds are normally strict seasonal breeders, they normally only come in heat from August to February, although some do have off season cycles. This applies to Alpine, Saanen, Nubian, LaMancha, Toggenburg, Oberhasli, and Sable (a Saanen with other color).
Meat breeds cycle year round.
Normally if you wanted to breed a dairy goat this time of year, you would have to induce estrus. The main concern when a dairy goat cycles off season is cystic ovaries, but that is not always the case.