  We study the minimal scotogenic model constituting an additional inert Higgs
doublet and three sets of right-handed neutrinos. The scotogenic model connects
dark matter, baryon asymmetry of the Universe and neutrino oscillation data. In
our work, we obtain baryogenesis by the decay of TeV scale heavy neutral
singlet fermion ($N_{2}$). We primarily focus on the intermediate-mass region
of dark matter within $M_W<M_{DM}\le550$ GeV, where observed relic density is
suppressed due to co-annihilation processes. We consider thermal as well as the
non-thermal approach of dark matter production and explore the possibility of
the lightest stable candidate being a dark matter candidate. Within the inert
Higgs doublet (IHD) desert, we explore a new allowed region of dark matter
masses for the non-thermal generation of dark matter with a mass splitting of
10 GeV among the inert scalars. We also see the variation of relic abundance
for unequal mass splitting among the scalars. The KamLand-Zen bound on the
effective mass of the active neutrinos is also verified in this study.
