Breastfeeding

Okay so the first day I did breast feed but she was only latching on the tip of my nipples so it was painful and so I just did formula till my milk came in and I used cream to make my nipples softer and then when I tried again it was perfect and I was also pumping and everything was going great but the last two days I can now only get less than an ounce of milk out of both boobs combined and ik when she goes on the nipple she’s not getting enough... is there a way that I can “restart” my breastfeeding and get more milk?