One hand mode on A11

in ZenFone 6
Hello,
I quickly read that one hand mode disappeared with A11 update. As I use this mode like everytime, is there a possibility to come back to a previous version of android ? Updates are automatics, I can't even chose to install it or not and now it's very unconvenient for me as I often use my phone with one hand while taking care of my baby. I love my zenphone6 but I'm disappointed.
Thanks for helping.
Comments
I also need one hand mode back. I am disappointed that it was removed
My words.
I NEED IT BACK! PLEASE
You can download and downgrade to A10
https://www.asus.com/Mobile/Phones/All-series/ZenFone-6/HelpDesk_Download/?model2Name=ZenFone-6