leaf growth

Is it normal for the the interior leaves growing from the nodes to push out and up on the main stem fan leaves? Plant is generally healthy, indoor, about three feet tall, mixing sun in the window with artificial light. Late veg. state. Hairs are visible to the naked eye. Vertical growth has slowed to maybe 2 inches in the last week, but the internodal growth has exploded, making plenty of clone opportunities for another batch.
 
Top