I had been expressing milk for 13 months. In the first few months, I only need to use 20-30 minutes with 2 let downs only. But for the last few months till now, I need to use more than an hour in expressing milk sometimes with 4 to 5 let downs in small amt of milk. The milk supply also drop despite I still pump 4 to 5 times a day. I had to go to work and hence not much time to play with my son. Any method to pump milk faster? I'm thinking to stop expressing milk if the situation doesn't improve.