Anyone else feel exhausted all day from how deep your sleeps are on magnesium?

Whenever I take magnesium before bed I sleep like a ROCK, like constant dreaming the entire time and don’t wake up once, but as a result of it I feel pretty tired basically 24/7 during the day

Whereas when I don’t take it, I don’t sleep as deep but I feel more awake throughout the day since I’m not “recovering” from my enormous sleep earlier

Does this go away after taking magnesium for a while? I’ve been taking 300mg for about a week