IRS accepted 2023 tax return

I used  the desk top Windows version of Turbo Tax Deluxe to file my 2023 return. IRS accepted my return on 2/20/24.  I was due for a refund. My Status of Refund shows it was received and being processed. As of 4/17/24, the status remains the same. I have not received any written correspondence from IRS. I suspect there likely is an error with my return but I have gone over it several times with a fine tooth comb and I cannot find anything wrong. I have submitted an inquiry to a Tax Advocate but have yet to hear from them. Trying to reach IRS via telephone is next to impossible. Do I have any options at this point?  Thx