Pretty normal to see people take all 9 over 2-3 days at PPL level.
Content isn't overly complicated and material is not huge.
You should have around 40% by common sense around 10% with a basic interest in flying and the other 15-40% is from the studying IMHO.
If your going to the USA check the approval status of your ATO first - several have been misrepresenting themselves as EASA approved for their customers to turn up in the USA and be told their not approved.
Here is the approved ATO List :
https://easa.europa.eu/easa-and-you/...-organisations