Exceed context limit

I was running `/execute-prp` on a green field project when I stumbled upon exceeded context limit:

```
API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"input length and 
    `max_tokens` exceed context limit: 196042 + 21333 > 200000, decrease input length or `max_tokens` and
     try again"},"request_id":"req_xxxxxxxx"}
```

How do you handle this?