It may not be the 'right' way, but I found to express without stimulating the areola, I would just express enough to get a letdown, then squeeze the breast itself (a bit like breast compressions) and the milk would just flow and I'd get ~200mL in 5mins or so and there'd be a feed in a bottle.
Also, if you steer clear of things that increase milk supply, that can help - so no oats, etc.