I'm not sure that all of Freddie's problems are fatigue problems, though days off can help with that mental fatigue for sure. Mechanics-wise, Freeman is struggling because he's having sequence issues in terms of his rotation. Upper body is too quick, making him appear to lunge and lose power. He's jumping at pitches and pushing his hands, which slows the bat down and makes you try to over compensate in other areas. Really affects barrel path as well. All hitters work to maintain good sequence where their lower half is on time and their hands can just be reactionary. It's easy to get out of whack and even when you know the issue, takes time get back in sequence to where you 'see ball, hit ball'.