Low Pagespeed rank in AMP pages

Hi,
We are facing low google pagespeed rank with largest LCP score in my AMP pages
https://www.zotezo.com/in/top/best-chyawanprash-in-india/?amp
https://developers.google.com/speed/pagespeed/insights/?url=https%3A%2F%2Fwww.zotezo.com%2Fin%2Ftop%2Fbest-chyawanprash-in-india%2F%3Famp
1) Eliminate render-blocking resources
URL /css?family=Roboto%3A400%2C500%2C700&display=fallback&ver=2.4.5(fonts.googleapis.com)
Transfer Size 1.7 KiB
Potential Savings 780 ms
URL /css?family=Roboto%3A400%2C700&ver=5.4.2(fonts.googleapis.com)
Transfer Size1.6 KiB
Potential Savings 780 ms
2)Remove unused JavaScript
URL
Transfer Size
Potential Savings
/v0.js(cdn.ampproject.org)
72.8 KiB
32.9 KiB
…src/service/action-impl.js
2.5 KiB
2.2 KiB
…src/service/url-replacements-impl.js
2.6 KiB
1.8 KiB
…src/service/history-impl.js
2.1 KiB
1.8 KiB
…src/custom-element.js
4 KiB
1.7 KiB
…src/service/viewport/viewport-impl.js
2.7 KiB
1.6 KiB
3) Reduce JavaScript execution time 2.0 s
URL
Total CPU Time
Script Evaluation
Script Parse
/v0.js(cdn.ampproject.org)
1,956 ms
1,661 ms
26 ms
…top/best-chyawanprash-in-india?amp(www.zotezo.com)
1,949 ms
144 ms
6 ms
Unattributable
381 ms
50 ms
1 ms
/amp-helper-frame.html?appId=…(www.zotezo.com)
84 ms
50 ms
4 ms
…v0/amp-lightbox-gallery-0.1.js(cdn.ampproject.org)
57 ms
39 ms
6 ms
How to resolve these issue?
Thanks,