ya basically. i squeezed mine untill almost no water was left in em...but the color of them were still fark brownish/red. once they start getting brown (lightish brown) then its safe to add a lil water. i just use a spray bottle and add 3 4 sprays around it and plug just absorbs it.
they can probly be slightly moist when puttin cut in, but try squeezing water untill "only one drop can fall out"
not sure who said it but golden advice! hehe