First vidhi, then raga (more)
Vaidhi-bhakti means discharging devotional service under regulative principles. Without vaidhi-bhakti you cannot jump to raga-bhakti. Raga-bhakti is spontaneous. That does not require any regulative principles. Out of love, out of feeling, anyone wants to serve Krsna, that is called.... That is gopis. All the inhabitants of Vrndavana, they did not undergo any regulative principles. But spontaneously, they are always ready to serve God, Krsna. That is called raga-bhakti.