Bubba seems to have a difficult time keeping his feet under himself, outside he is fine, inside he is constantly wiping out

I look and feel his pads and they seem really smooth and the combination of not weighing enough, maybe. I tether him to me when it's "free time" (ironic I know) and I find myself walking so slow so he doesn't slip so much. Will his pads eventually toughen up, or will he have to just figure it out?

Thanks in advance for any insight