My page rank has slightly decrease with decrease in search traffic.

In bing, my seo report says, 'Evaluated size of HTML is estimated to be over 125kb and risks not being fully cached'.

i have tried what i can do but not yet.

I need advice and help on how to solve this problem

eliminate all ad's
remove all plugins
reduce the number of posts on a page
get rid of your sidebars

those are some things you can do...

that's a lot to do. thank you