US Immigration from Philippines

We sent in our I-751 in on the 3rd of March. Tracking shows it was received within the 90 days.

It's now been 22 days with no response, which seems ok, but also they have not cased our check. How long is the normal timeframe and at how many days should I start trying to follow-up?

Thanks

If you meet the income requirements, is it fine to list your gross income and provide a tax return transcript and leave the other fields (bonds, real estate, life insurance) blank?

Any news from the US Embassy in Manila about K1 visa interviews? Our case has been "ready" for almost a year now and our emails to the embassy just gets automated replies. This sucks.

Has anyone recently done the CRBA process through USEM? We are wondering how long it is taking now from start to finish. My wife and I went through the CRBA process at USEM in 2017 for our daughter and it didn t take long to receive CRBA and passport. Thanks for your help. I have looked through all the postings in the Philippines forum back to September 2020 and have found no CRBA experience postings.