First NFA, how long before I fill out form 4?

I purchased a Rugged Obsidian 9 last week through a local shop partnered with silencershop, but they had it in stock so I have a serial number and it shows in my silencershop tax stamp wallet.

Signed up for eforms and got the welcome email. I assume I do nothing at this point until I get a notification to do my form 4? I'd ask my Ffl but they're closed until Tuesday. Thanks!