No more bottles

I know it’s best to have transitioned away from bottles by now but I still think I can give him one…I pump while at work (I’m part time) so we have a small supply but lately he won’t drink it he only wants me. I hate to waste it but at this point I’m merely pumping so I can keep my supply up. Anyone else have this happen? I don’t want all the milk to go to milk baths but I might not have a choice if he won’t drink it. He also doesn’t drink much cow milk, maybe a sip or two at some meal times. He eats enough cheese to help him get his calcium