You do realise that Xavi has declined due to ageing right and has nothing to do with coaching? Busquets is playing through injury and has been for quite some time so that should perhaps he has not quite been himself for a while. Not everything is Enriques fault. If you win again today (which I think you will) then you will still only be two points behind the leaders Madrid.
We have more than just Xavi and Busquets in the midfield. I'm not expecting creativity from Busi anyway, he's a DM. I'm expecting from the rest, who are a lot.