how to optimize or disable google web font "Merriweather" in twenty sixteen ??

i’m facing this problem at google page speed insights : “Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 1 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
Optimize CSS Delivery of the following: https://fonts.googleapis.com/css?family=Merriweather%3A400%2C700%2C900%2C400italic%2C700italic%2C900italic%7CMontserrat%3A400%2C700%7CInconsolata%3A400&subset=latin%2Clatin-ext”

1. i had try one plugin : disable google font.. (it’s work for me) but it’s take 15% of plunging loading time.
2. i’m trying to make Async JavaScript but not able to fix it..

is it any way to optimize or disable this without plugin ?
how can i load google fonts easily, without effect my page speed.. ??

Thank you