SetImmediate - splitting a heavy computational task. Do I understand correctly?

Question

Node.js

Hello!
Let's say there is a very large computational task and I want to break it into parts and execute each part in one iteration of the libUV event loop, and not all at once. Let's say I broke it into 3 parts. Suppose like this:

function part1(){...}
function part2(){...}
function part3(){...}

The code contains reading files, requests to the server from users, etc.
Is it correct to split the execution like this:

setImmidate(){

part1() //на след. итерации цикла

   setImmidate(){

      part2() //на след. итерации цикла

      setImmidate(){

         part3() //на след. итерации цикла

      }
   }
}

Thanks in advance to everyone who helps!