My dog is blowing coat. He is a white shepherd/husky mix. He is 2 years old so I am not surprised by the amazing amount of fur that he is losing. [

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I am noticing he has a bit less energy. He also goes to day care a few days a week and they have commented that he is not as playful and just not himself.
He is eating normally, and not acting weird otherwise. This is week 3 of him blowing coat, so I am hoping we are nearing the end.
Can his change in energy level be caused by blowing coat or should I be concerned that something else is going on?
Thank you!