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A triangular lattice with onsite Coulomb interaction $U$ present only on onesub-lattice, is periodically driven by electromagnetic field with a frequency$\Omega \gg (t,~U)$ at half filling. In this high frequency limit, theelectromagnetic vector potential, with an amplitude $A$, modifies the barehopping and generates new next nearest neighbour hopping parameters. For $U=0$,the driving acts like an emergent intrinsic spin-orbit coupling term andstabilises three dispersive bands with the lower and upper bands having nonzero Chern numbers. Within a slave rotor mean field theory, we show that while$U$ freezes out charge fluctuations on the interacting sub-lattice, it does notopen up a charge gap without the external drive. In presence of the drive, andsmall $U$, the system exhibits repeated metal insulator transitions as afunction of the amplitude $A$. For large $U$, we establish that the freezing ofcharge fluctuations on the interacting sub-lattice stabilizes an emergent, lowenergy \textit{half filled non-interacting Kane-Mele model}, whose band gapscan be tuned by varying $A$. In this limit, we show that the external driveprovides an handle to engineer periodic band inversions at specific values of$A$ accompanied by topological phase transitions that are characterised byswapping of band Chern numbers.

Tailoring Metal Insulator Transitions $\&$ Band Topology via Off-resonant Periodic Drive in an Interacting Triangular Lattice