Hard to tell how injury might be impacting Avila and if it is lingering as he plays through but struggling.
If he does not improve soon, he needs to sit for Jonah Jackson, who is a LG and ought to be given a chance at his natural position before casting him off. Maybe Avila has to be the backup LG. Economically it would make more sense as he is on a rookie contract. Better player plays. Problem is, it would hurt continuity, yet again, but if Avila keep struggling this badly, I don't think you have no choice.