Does anyone know how to make repeating groups responsive?

Hey guys,

I looked around for different options on the forum and couldn’t find a fix. I’m having trouble fitting an input message field on different screens. The top photo is from an iphone XR (this is what I designed it for) and the bottom is an iphone 6s plus. I played around a couple of different options and I couldn’t the input box to fit. Does anyone have any recommendations?

Could you put the input in a floating group, so it stays at the bottom?

Do you know how to add a floating group to another group? The floating group would be fine however the “send message” button adds a message to the parent groups conversation. I can’t get the floating group itself to reference the original conversation group.