Well there go SUse, the croc roll & walking tend to go hand in hand. Why lie still when you can go where ever you like!
Evan was walking by 10 months also & oh how nappy changes were so much fun!
Another thing you could try, is get him to get you the things. So ask him to get you a nappy or the wipes & come lie down etc. He may be a little young to understand but if he thinks he is helping mummy he might be more willing KWIM