Bag of words a json formatted value within a SQL Server tables column?

Question

I have a json formatted value inside a column (named column2) in my table. It looks like this:

{
  "conversation_id": "projects/e44ftgAWERGaqrwgr3grg",
  "participant_id": "pCZXSAEWGFn/participants/",
  "reply_audio": {},
  "response": {
    "queryResult": {
      "action": "input.welcome",
      "allRequiredParamsPresent": true,
      "diagnosticInfo": {
        "webhook_latency_ms": 593
      },
      "fulfillmentMessages": [
        {
          "text": {
            "text": [
              "<speak><break time=\"50ms\"/> <prosody rate=\"90%\">For navigation <break time=\"150ms\"/> tell me where you’d like to go. <break time=\"200ms\"/> otherwise  <break time=\"50ms\"/> please say advisor</prosody> </speak>"
            ]
          }
        }
      ],
      "intent":........
    }
  }
}

I am trying to put all the words between the [{text}] and "]}}] element. So, ideally, I would want the output to look like this (each word is separated by a comma):

[For,navigation,tell,me,where,you’d,like,to,go,.,otherwise,please,say,advisor]

This is what I have so far:

SELECT
    sesh_id,date,
    CASE
        WHEN column1 IN ('index1')
            THEN ( REGEXP_REPLACE(REGEXP_REPLACE ( REGEXP_REPLACE(
      REGEXP_REPLACE(column2,"\\.",""),"\\?",""),"\\<SPEAK>","\\ . STALINE")
      ,"\\</SPEAK>","\\ ENDLINE ."))
            ELSE (column2)
    END ARRAY_of_words
FROM
    table1

Is there any fast way to accomplish this task? Any ideas or suggestions would be appreciated.