What is the processing time for a non-O marriage visa extension in Samutprakarn and how should the 400k bank requirement be handled during that period?

We are going to do an extension 1 year for non o base on marriage visa for my husband ( Australian)

at Samutprakarn office. We went to extended the 60 days visiting Thai wife due to the visa date is not enough for 2 months seasoned of 400k.

the 60 days visiting Thai wife will be expired on Aug 22. And the money is ready now, so 45 days in advance we can apply to extend 1 year in on Jul 09.

My question is.

1. How long for consideration will it count? 3 weeks after apply which is around Jul 30 or maximum 1 month will be Aug 09. Or it will be Aug 22 the day of current visa expire?

2. After apply visa and they accept all docs, do we need to keep 400k in the bank no move? Or show them bookbank or statement again on the day we go back for result? Can it move during waiting but the day we back only need to show 400k balance? If anyone can share experienced Samutprakarn will be appreciated.

Thank you very much 🙏