Yes, i bring all of mine in about a week before the first due date, then just check udders and behaviour. Once the first possible lambing is due I am out there almost all day, well from 5am to 10pm (in the first three weeks), and check during the night if I think one of them I wasn't sure about... Have started to "train" my girls to keep checks too and come and find me if a ewe starts to lamb. They are getting better, now they have seen a few.
Busiest times are first thing in the morning, then again when I am about to have a meal,... any meal anytime!!!!