  The Cosmic Microwave Background (CMB) observations results reported by {\it
Planck} satellite suggest a plateau characteristic in the flat potential of the
inflaton field is favored to drive the Universe's early acceleration. On that
note, Power Law Plateau (PLP) potential has gained a lot of attention. In this
study, we demonstrate that implementing this inflationary model in an
Einstein-Gauss-Bonnet(EGB) gravity background makes the model compatible with
observations while avoiding late-stage thermal inflation which is otherwise
unavoidable in a standard scenario. More importantly, we have taken the PLP
model as a case study to check the new slow-roll approximations method proposed
in \cite{Pozdeeva:2024ihc}. Then we take one step further to check the
consequence of generalized reheating in this scenario. Thus opening a new
promising window to study inflationary dynamics in EGB gravity.
