If you're talking about lower branches, that would be normal. If you're talking about upper branches, the first thing that I would think of is the soil is too dry. Another common problem of NIP's indoors is spider mites.
To see if the plant has mites, take a spray bottle with plain water in it, and squirt along the branches (The only useful aspect of the common practice of "misting"). If there are mites, the water will stick to the webbing, and you will see it instantly. You can eradicate the mites by spraying with a mixture of 1 tsp of liquid dish soap in a spray bottle of water, sprayed all over till the plant is dripping, especially on the undersides of the leaves. Do this every week for a month.
This article should help: https://www.gardeningknowhow.com/houseplants/norfolk-pine/norfolk-island-pine-care.htm