How you can monitor and review risk management plan?

Set-up a schedule (e.g. during your monthly reviews) in order to force yourself to review your risk management plans. Look at what went well and was mitigated, review all outstanding risks to see if they are still valid, and collate new risks that have happened since your last review. The key to all risk management is to regularly review your risks and not just do it yourself, but involve other key team members and stakeholders in order to be better prepared for any eventuality.