API - C# - Delete rows from a specific index

I 've figured out on my own the following function in NodeJs

function resetSheet (sheetId) {

  // Get sheet

  smartsheet.sheets.getSheet({sheetId})

    .then(function(sheetInfo) {

      const rowIdList = sheetInfo.rows.map(item => item.id);

      return rowIdList;

    })

    .then(data => {

      const deleteIds = data.splice(3);

      deleteIds.forEach(rowid => {

        smartsheet.sheets.deleteRow({

          sheetId: sheetId,

          rowId: rowid

        })

          .then(function(results) {

            console.log(results);

          })

          .catch(function(error) {

            console.log(error);

          });

      })

    })

    .catch(function(error) {

      console.log(error);

    });

}

It works but sometimes, it does not delete all rows from the 4th to the end along with alerting the following error

errorCode=4004, message=Request failed because sheetId XXX is currently being updated by another request that uses the same access token. Please retry your request once the previous request has completed

Do i missed anything?

And is there any better solution we can deal with it? Solution with C# would be appreciated so much

Many thanks!