Trees naturally sprout in spring, yours have sprouted mid winter which is very hard to succeed with. And the trees needs to be outside at all times.
Actually, we don't know this is early sprouting.
Where is the tree located? In a warm enough climate that trees outside are sprouting? Most of my trees have leaves popping out right now. I have no evergreens except azaleas so I can't compare with your pine. This is actually a week or so late. In the past the leaves have popped out in late February in most of the deciduous trees.
Most species of pine need cold dormant times, which you won't get inside (unless the power goes out and the wind blows the roof off).