How often should I check my Michelin tire pressure?

I'm a bit puzzled by how often to check my Michelin tire pressure. The owner's manual suggests checking once a month, but I've also heard that it's best to check every week or two, especially if you drive in extreme temperatures. However, this would be quite time-consuming and might not be necessary for everyone. I'm curious to know what others think is the ideal frequency for checking Michelin tire pressure, considering factors like driving conditions, temperature fluctuations, and the potential consequences of under/over-inflation. What's your take on this?