Low supply

I can only pump about 1.5 - 2 oz total each session and my LO is a month old now. Is it worth it continuing even though I am only giving him 1/3 breast milk? The older he gets the less I'll be able to provide. I am just dividing my supply between his bottles for the day so that every bottle has some breast milk in it. Would you continue or would you stop after 3 months? It's tiring breast feeding and pumping