How to split json array into sub array using jolt specifcation in Apache Nifi?

I am tring to prepare a jolt specification for the expected output, please help me out.

Note:

The expected output: where credit is in array with multiple field, then json will split into subjson where InvoiceMonth will be same as input only but in 1st subjson the InvoiceMonth value has as it is remaining subjsons InvoiceMonth values needs to be 0.

Input:

[
  {
    "InvoiceMonth": "202306",
    "credit": {
      "name": [
        "7828credit:0",
        "2738credit:0"
      ],
      "amount": [
        "2.5E-5",
        "5.0E-5"
      ],
      "full_name": [
        "Committed USAGE",
        "Committed USAGE "
      ],
      "id": [
        "7822credit:0",
        "2732credit:0"
      ],
      "type": [
        "COMMITTEDDISCOUNT",
        "COMMITTEDDISCOUNTBASE"
      ]
    },
    "resource_name": "projects-2",
    "resource_global_name": "//https.googleapis.com/",
    "label": ""
  }
]

Output:

[
  {
    "InvoiceMonth": "202306",
    "credit": {
      "name": "7822credit:0",
      "amount": "2.5E-5",
      "full_name": "Committed",
      "id": "7822credit:0",
      "type": "COMMITTEDUSAGE"
    },
    "resource_name": "projects-2",
    "resource_global_name": "//https.googleapis.com/",
    "label": ""
  },
  {
    "InvoiceMonth": "0",
    "credit": {
      "name": "2738credit:0",
      "amount": "5.0E-5",
      "full_name": "Committed ",
      "id": "2738_credit:0",
      "type": "COMMITTEDUSAGEDISCOUNT"
    },
    "resource_name": "projects-2",
    "resource_global_name": "//https.googleapis.com/",
    "label": ""
  }
]

You can use the following spec

[
  {
    "operation": "shift",
    "spec": {
      "*": {
        "credit": {
          "*": {
            "0": {
              "@3,InvoiceMonth": "[#2].InvoiceMonth", // go up the tree three levels to reach the level of the attribute and grab its value
              "@": "[#2].&3.&2",
              "@3,resource_name": "[#2].resource_name",
              "@3,resource_global_name": "[#2].resource_global_name",
              "@3,label": "[#2].label"
            },
            "*": {
              "#0": "[#2].InvoiceMonth", // all values expect for the first one for the attribute is set to zero
              "@": "[#2].&3.&2",
              "@3,resource_name": "[#2].resource_name",
              "@3,resource_global_name": "[#2].resource_global_name",
              "@3,label": "[#2].label"
            }
          }
        }
      }
    }
  },
  { // pick only one component from the reformed arrays with the multiple repeating components 
    "operation": "cardinality",
    "spec": {
      "*": {
        "*": "ONE"
      }
    }
  }
]

where the main idea is looping through the arrays under "credit" object, and then adding the other attributes.