TurboTax has no information about what is holding up the processing of your tax return. It's the IRS that is holding up your tax return, not TurboTax. TurboTax does not get any information from the IRS after your tax return has been accepted.
The IRS is severely backlogged and severely understaffed this year. They have a backlog of millions of tax returns that have not been processed yet. They don't have enough people to process all the tax returns, and they don't have enough people to answer all the phone calls. Any tax return that requires manual handling, as yours does, will have to wait many months to be processed. The IRS hopes to clear the backlog by the end of 2022.
