Is there anything we can do to get our milk supply to come in quicker? Worried about not having any during the first few days.....

Hi jenisha here, my baby is 18 days old. Is there anyway to get rid from bottle feeding..i want to feed him only my milk , I have milk but supply is very slow, even he is not able to suckle proper..so currently I am bound to give him combinations of feeds such as cow milk and breast milk both to avoid his hunger...