I flowered one of Paul Barden's nep crosses in 2.5 years, from seed. No artificial lighting, lowland temps year-round. There aren't any secrets or goofy tricks IME, just making sure your plants are growing as optimally as possible.
Good growing conditions in general will create maturity faster. Start with the basics--adequate light, stable temps, quality media. Then fuss about the more nuanced but equally important things, like nutrition and photoperiod. Starving a plant of P or Ca, for example, can often prevent blooming.