Peppar is the same Shell, wont have a bar of the dummy and like you I have about five different styles all going to waste!

I find when I no she is fed and fine but wanting to suckle I give her my (cleaned) little finger. Fingernail down on her tongue so I dont accidently scratch the roof of her mouth, usually after five minutes nods off and I can put her down.
I dont know why she takes this and not a dummy but she does and it works so it may work for you too.

Good luck