J.P.
I pump for the supply - daycare and sometimes end up with the same thing, pumping only an hour before the next feeding. It hasn't interfered yet, and you may get some extra milk with it while you are supplementing. If it works better in your schedule, you can also try pumping before. Just keep at it, and keep your 2 year old engaged. Your little one will figure it out soon, and you will be so happy that you kept with it.