Is there a way to make non afk time count?

I have a player who like to afk farm a lot. I don't want him to acquire time while he is in afk. Is there a way to fix that?

Also, is there a way to make it where they have to rank up Xhrs over Xdays?? Can I make the requirement 48hrs AND 14 days??
Example:
Elite:
requirements:
time:
value: 48h
value: 14d
results:
rank change: Elite;Legend
command: 'say &p has just been promoted to Legend!'
message: 'Congratulations, you are now a Legend!'
Legend:
requirements:
time:
value: 192h
value: 60d
results:
rank change: Legend;Noble
command: 'say &p has just been promoted to Noble!'
message: 'Congratulations, you are now a Noble!'

Yes, you can set afk integration in the Settings.yml to true. After that, you'll need to have a plugin that records AFK players like Essentials, AfkTerminator, UltimateCore or RoyalCommands.

For your second question, the answer is no. You cannot specify a time range where players should meet the requirements.