  We consider the problem of the continuation with respect to a small parameter
$\epsilon$ of spatially localised and time periodic solutions in 1-dimensional
dNLS lattices, where $\epsilon$ represents the strength of the interaction
among the sites on the lattice. Specifically, we consider different dNLS models
and apply a recently developed normal form algorithm in order to investigate
the continuation and the linear stability of degenerate localised periodic
orbits on lower and full dimensional invariant resonant tori. We recover
results already existing in the literature and provide new insightful ones,
both for discrete solitons and for invariant subtori.
