A month ago I sold a sizeable amount of real estate. I will quit my job in 6 months (resulting in lower cashflow). Do I buy as many hens as I can right now? I

A month ago I sold a sizeable amount of real estate. I will quit my job in 6 months (resulting in lower cashflow). Do I buy as many hens as I can right now? I heard of studies that lump sum investing is better than dollar cost averaging two thirds of the time, but I’m quitting my biggest income source soon. What is one to do in this case?