If you’re already starting to feel the strain from doing this, I’d maybe consider trying a different approach that spreads out your review load a little more evenly so that you don’t have days where suddenly hundreds of reviews are getting dropped on you. That’s only going to get worse the more reviews you have in circulation.
If you’re trying to go full speed, just be aware that your workload will increase over the course of a full year. So you have to be prepared to put in the work literally every single day with no breaks. By the end, this will likely be at least a couple hours a day, just spent on WK alone. It’s a huge, grueling commitment.
Some people can do this and get through it, but it’s a recipe for burnout for many others. I wouldn’t personally recommend going this route unless you have a lot of Japanese knowledge already, or you have lots of free time every day that you can devote to studying Japanese so that you can balance your studies with stuff outside of WK.
If you’re still committed to going full speed, I recommend considering spreading out your lessons and doing a consistent number of them every day instead of binging. With this method, full speed is still possible with the use of the lesson filter script.
The benefit to doing a consistent number of daily lessons is that it keeps your daily review counts consistent, too, so you don’t have days where you’re getting 80 reviews, and then suddenly 235 (those numbers will get even worse when you’re six months in). This makes it easier to plan your life around WK so that you know exactly how much time to expect to have to sink into it each day, and if something comes up in your life, like if you get sick or go on vacation or get very busy unexpectedly, you won’t have to risk a 400 review day falling on one of those days.
It’s very easy to fall off the wagon with WK if you miss one day and quickly get overwhelmed by your review counts. Some people are able to power through and reach level 60 even with wildly uneven review schedules, but for many others, this workload is unsustainable, and falling a little bit behind easily turns into an insurmountable review pile.
I recommend aiming for a workload that you’re still able to complete even on your worst days, because it’s very likely that at least something will come up in your life during the next year, and you don’t want it to cause you to burn out on Japanese.