If your team is getting whacked, and you're turtling in base, I have some great advice for you:
Give up and lose.
You get more honor and rep for losing than you do in the two to ten hours you sit and turtle. You waste your time and your team's time by sitting there in some vain attempt to take your base back when the reality is, if you lost it in the first place then your team is not good enough to win.
Stop these 12+ Hour AVs and accept your defeat. Pride is toxic and ruins this game.