Has anyone successfully stopped supplementing formula after a few weeks?

Kelsey • TTC baby #2❤️ Baby girl born 03/26/2019🎀💗

My milk didn’t come in till the 4th day and I haven’t been producing enough so I’ve been supplementing formula. My daughter is 3 weeks old. She has about 6 formula bottles a day but she’s also on the boob A LOT. I’ve been slowly trying to cut down the formula and just breastfeed and eventually I want the formula gone entirely. Any suggestions?