It depends
Guys,
485 approval depends on your PD. If your PD is not current, you are EB3 and you are from one of the countries affected by retrogression then completing your FP might not necessarily mean that your approval is around the corner. However, for those that have current PDs and have done FPs recently it is not unreasonable to expect an approval within 2-3 months. Again anything is possible but these observations are based on current trends.
regards,
saras