Two different Watsapp backups in the same Iclou...

Heya!

Currently I have Watsapp backuped in my Icloud account. I want to change my phone number, not the Icloud account too. Still, I want to keep this backup. Is it possible to have in the same Icloud account two separate backups from two different Watsapp numbers? Or the 2nd one will overwrite the 1st one and I will lose it?

Thank you very much!