I have the following document as an example:

[
  {
    _id: ObjectId("6206bb93686af95e81f45afa"),
    steps: [
      [
        '6206bb87686af95e81f45af9',
        '6206bb7a686af95e81f45af8',
        '6206bb7a686af95e81f45af8'
      ],
      [ '6206bb7a686af95e81f45af8', '6206bb87686af95e81f45af9' ],
      [ '6206bb87686af95e81f45af9' ]
    ],
    name: 'name',
    desc: 'desc',
    __v: 0
  }
]

I want to populate each id inside the nested steps with another Model. I do not have any Object keys here so I assume I can't use Mongoose populate chain syntax. How am I supposed to achieve this?