Yes, it will. Especially if you're already having issues with supply. There are things you can do to bring your supply back up, but you would have to be committed. If the issue is lugging the electronic pump around, you could get a hand pump. It's small and weighs practically nothing. I actually prefer the hand pump to the electronic. It's a bit more work, but it's more efficient. I get about 4oz in 10min of pumping.