Does anyone know what is the best time to switch between phases on a double-electric pump? I have both a PISA and a Freestyle, which have a button that lets you switch to the expression phase from the let-down phase (or it switched automatically @ 2min I think?).
Anyway, does anyone know if the time you switch matters? Meaning, should I switch at the first drop of milk? Should I wait until the milk is coming more forcefully? Is there any advantage at leaving it on let-down until it switches over on its own?