Token information in the IPFS appears with a delay?

Hello, I have a question: I’m using Helius RPC and they send me data on my webhook, so after token_mint (token creation) I immediately receive token metadata (with link on IPFS), and after that I’m trying to get token info (like description, social networks, etc) using .get request on IPFS.

The main problem is that IPFS returns None (but after some time it returns all token infos). So, how quickly does information appear in the IPFS? And how can I speed-up retrieve of this infos?

Use-Case code:

# After webhook data received
response = requests.get(url=token_metadata["data"]["uri"])  # IPFS
data = response.json()
>>> None

What is the base URL of url=token_metadata["data"]["URI"]? Is this pointing to some Helius-owned IPFS gateway or another?