Mega lst

My plant is 2 1/2 months old and ten days into flowering. Yesterday I noticed I had a bunch of growth below what I call the shadow canopy. I needed to open her up and let it see the light. She was about a little over a foot tall even canopy. And now she's flat out little over six inches tall with the inside completely exposed. Is it alright to last this early in the flowering stage?
 
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