Determining V, R, S from wallet address/signature hash (ECDSA)

I have recently added liquidity to a dex that does not support liquidity withdrawal for non-supported tokens. I am attempting to recover the LP using the remove LiquidityETHwithPermit function as the dex is a pancakeswapv2 fork.

To do so I need the v, r, and s values for my wallet. If there is another way to approve the LP transaction that would also be helpful. Please help!