everafter,
If really you could only express morning and nite, is quite diff to maintain the supply..In about 1 or 2 mth the supply will be gone. Unless you dun mind pump in toilet and discard the milk during office hour, then maybe can last longer. If work in town, can consider shopping center's baby room.
To maintain the supply, need to pump 2x during office hr at least.
Someone ask about how to defreeze the frozen milk..(sorry thread too long confusing..hehe)
Bring the frozen milk to fridge compartment(the chiller, not freezer) the night before or the day before. ie If you wanna use the frozen milk in morning, u bring down the frozen milk the nite be4, for evening, and vice versa.