Is my only option to grind

I'm stuck at the time dimensions unlock phase of eternity. It's kind of stupidly freaking slow right now though, and getting the required EP for the next time dimensions is taking AGES. I have to do it manually too because there's no x times last eternity available (yet?). I'm at e2820EP, all time dilation unlocks up to 1e16 (minus one dilated time upgrade, will be getting that soon). So what can I do?