A new magnetic Weyl semimetal was recently proposed in the layered half-metal Co3Sn2S2 with Kagomé lattice,whose Weyl points situate only 60 meV from the Fermi energy, resulting in a large anomalous Hall conductivity in the absence of a magnetic field. Co3Sn2S2 is a quasi-2D ferromagnet with a Curie temperature TC= 177 K and a magnetic moment at Co site along c-axis. By doping Ni into Co3Sn2S2, the ferromagnetism is systematically suppressed up to 20 % concentration, a nearly linear dependence of the resistivity are discovered in the normal state, suggesting a quantum critical point (QCP) while the Weyl nodes are more closer to the Fermi level. Here we propose to carry out inelastic neutron scattering experiments to reveal the possible FM QCP by investigating the E/T scaling and its temperature dependence of linewidth. We apply 6 days beamtime on the OSIRIS spectrometer.