Updating an ACF field through WordPress API [closed]

I’ve been working on a mobile app using react native as my frontend and WordPress as my backend. I’ve been able to login using the JWT token thereby generating a token for order secured activity. Right now, I’m in a fixed trying to update an ACF field using the generated token. Gone through all the documentation but still not working. Please help me out on this.

const trackingServerUpdate = async()=>{
        const form =  {"fields":{"status": "Picked Up"}}
        try{
            const postStatus = await fetch(`https://mysite/wp-json/wp/v2/logistics/${items.id}`, {
  method: 'POST',  
  headers: {
    Accept: 'application/json',
    'Content-Type': 'application/json',
    'Authorization': `Bearer ${token}`,       
  },
  body: JSON.stringify({    
    form        
  })
});
    const reply = await postStatus.json()     
    console.log(reply)
        }catch(e){
            console.log(e)
        }
    
    }