For someone who values keeping his identity secret so much, Bruce is pretty terrible at doing so with how many people have been able to work it out even outside of his inner circle. Rick is far smarter than any of those who did so through pure deduction (at least when the plot demands he be), so it probably won't take him that long.
With the kind of technology Rick also tends to have on him such as his many type of laser guns and technology capable of destroying planets or even entire timelines, no amount of prep is going to help Batman out this time.