Mommas.... this happened today. I pump on break for 15 minutes... these are 2.5 oz tubes... i had to store and pump more. 6.5 oz all together. After battling forever to get my supply back up... i am doing this. It makes me so happy. I know ill be able to pass 6 months if this keeps up. My son is being well fed. Going from 2.5-3 oz this is amazing.