I am in a similar situation, just in a different LTR category. I am currently waiting at the "Consideration by Government Agencies" step after submitting my tax report along with a brief explanation of why the non-taxable income wasn't included. Do you remember how long it took to receive confirmation after you sent your tax report? They were quite prompt initially when asking for additional documentation, but it has now been two weeks without a response.
Part of me thinks this might be a positive sign because if they were going to decline the application, they wouldn't need much time, would they?