Are there any methods to start monetizing earlier?
Yes, there are actually two common methods to monetize earlier: (1) affiliate marketing and (2) the Google AdSense network.
Affiliate marketing is a conversion-based marketing model whereby you sell other people’s products related to your niche and then get paid per sale.
Google AdSense is an ad network wherein you register your website or publication and it starts feeding you different ads. In this model, you get paid per the number of clicks rather than per sale.