Are your dreams pleasant or stressful? If stressful, you may not be breathing enough and that can cause a wake up and feeling tired and sleepy all day.

Why are you taking zinc?

Is it mag oxide or another magnesium?

Is the B-Complex full of other things besides B vitamins or is it a B-50 Complex?

7th week is still early. But, you should try to not think about a timeline. Timelines cause anxiety. Anxiety is the enemy of recovery.

My best to you.