Anyone successfully pump but not nurse?

😭 Baby doesn’t want to nurse anymore because perfers bottle nipple better. Maybe every now and then I get baby to nurse but it’s not enough. My milk supply has dropped low and I’m pumping every 2-3 hours to get it up. I had to give hottie because I had to supplement but now I barley have milk. Can I get my supply up and bottle feed I’m 4 months pp is it ever to late to get supply up?