Second stimulus

I applied for the first one as a non filer so I should get the second one automatically based off of what Forbes said

"Payments will also be automatic for anyone who successfully registered for the first payment online at IRS.gov using the agency’s Non-Filers tool by November 21, 2020, or who submitted a simplified tax return that has been processed by the IRS."

I didn't have a checking account for the last check so I got a paper one. Now I do and have since moved and updated my address with USPS. I assume since I don't have a way (or just don't know how) to tell the IRS this I'll just get it in the mail, which is fine. Even if it gets sent to my old address that won't be a big deal cause I was living with my parents and they can just mail it to me. I'm just concerned though. How will I know when it'll be sent? I don't want it to just be sitting in my mail. I don't check the mail every day cause I don't get much, but if I knew more of a time frame I'd make sure to check every day. I live in an apartment complex and just don't like checking lol