Can I complete my 90-day reporting online before my visa extension is granted in Thailand?

Dear Tod & team,

I entered Thailand on a non O visa spouse single entry on 26 October, my visa expires 23 January. I booked my appointment on 10 January for the extension at CW.

My question is the following:

Can I do my 90 days reporting online on 8 January which is 15 days prior to my visa expiration or do I have to wait until the date of grant of my extension ?

As usually the last date is 7 days after the 90 days. Given the under consideration period is 30 days I may be late in this case.