You think he could maintain that level 2 games a week for the rest of the season? Always unrealistic.
There may be other reasons, but I'd be surprised if he wasn't struggling fitness wise after nearly 2 years out.
I doubt it would make much difference to be honest. Not like he's put in a really good performance since January. He's not played regular football for nearly 2 years, his body just isn't up to 2 games a week and it's shown.