It looks like growth of leaves to me, however, if it's 3 months old it could also be signs of "Preflowers"
Rest assured, unless your plant is getting 12/12 it will revert to Veg mode. My indoor mothers under 24/7 hour light cycle started to flower a bit, until I realized it was just preflowers. Preflowers is a way of the plant showing that it is mature enough to start flowering, and starts to do it on its own. However, if it's not in a flowering light cycle, it will quickly revert back to its vegetative state.