Let Fiddle walk while he drains.
He would walk more slowly, or course. He only needs to walk fast enough to keep up with the feared enemy, so let the straw man waddle at half speed while he is in mosquito mode?
Maybe he could walk at full speed while crowstorm is around him. Maybe.
He is a champion dependant on keeping people next to him, but who also has to stand still to get off most of his damage.