In the case of the semi-vowels, [the articulator] is in slight contact [with the point of articulation]. For the spirants, [the articulator remains] also [slightly?] open [or open, besides being in slight contact?]. (pp. 146-147) - Deshpande (1997)
Within the same word, [the “m” is delated] only before spirants. (p. 298) - Deshpande (1997)