Yeah, like @tmahrt said: waiting will get you nowhere.
Luckely people before have alreaady faced with this problem and created this:
/WaniKani-API-Google-Docs-Awesomeness/8068 It is done by using google docs to gather data.
Or if you have your own server (or any machine that is up long enough) you can use this script to periodically download your progress. Bitbucket It is written in bash so your computer must be linux based. Raspberry-Pi is ideal for this.