Once your return has been accepted (received) by the government, they take over the refund status update duties, since they hold the purse strings. The status in TurboTax will remain as "accepted."
Until the IRS begins to process your return, they will not show any info on their site. Many different factors can affect the timing of your refund after they receive your return. Even though they issue most refunds in less than 21 days, it’s possible your refund may take longer.
https://www.irs.gov/refunds tool includes a tracker that displays progress through 3 stages: (1) Return Received, (2) Refund Approved, and (3) Refund Sent. It also provides an actual personalized refund date as soon as the IRS processes your tax return and approves your refund. It doesn't show information about amended returns.