I. Introduction
In biological models, time delays help to illustrate resource maturation periods, reaction times, feeding times, regeneration times, etc. [1]–[4]. Time delays disturb the stable equilibrium and cause a fluctuation in the population dynamics; hence Delay Differential Equations (DDEs) are generally more complex dynamic systems compared to Ordinary Differential Equations (ODEs). The parameters of Delay Differential Equation Models (DDEMs) are often unknown. Even though, a lot of the DDEM forms are proposed by investigators according to their grasp the underlying dynamical system.