It’s completely up to you and your team or your client, or both. Just think about it thoroughly: do you really need to spend time creating animations before the actual development of your product? If you are making high fidelity prototype, then you are most likely are doing so because your client wants a huge complicated app, and by doing so you want to save up time for future development. I would start making animations in Webflow for most other websites that aren’t animations heavy. I mean it makes sense, at least resource-wise.