I asked because 99,9% of the people that buy a Juniper and keep it indoor's for a few months, later come ask for help because the color of the foilage is fading away, and the juniper is then already death for a few weeks/months. Your color of the juniper looks good now, almost if it was hiding in a greenhouse for a while.
I have friends with a wood stove in there living room, but every winter most of there houseplants die because of the great heat/drynes swings inside the room.
If it worked for 4 years then don't brake the habits.
Did you never prune this tree in the last 4years?