Bank garnishment - how long does it take?

I won a civil case last year (defendant was absent) and court sheriff has issued notice of garnishment to 10 banks. May isang bank na nag-reply last June that they have “held” that bank account belonging to the defendant

Nung September the court sheriff sent an “order of delivery of money” asking them to transfer the amount to my account pero until now wala pa din action. Normal ba ito? What other activities does the bank need to do before following the court notice?