This app was mentioned in 2 comments, with an average of 1.00 upvote
If you want to do a lot of burpees you should use a Metronome. I use the app Maelz Sports https://play.google.com/store/apps/details?id=jp.blowbend.android.sports.maelzsports&hl=nl
I did 250 without breaks yesterday. I suggest you download and use this app.
https://play.google.com/store/apps/details?id=jp.blowbend.android.sports.maelzsports&hl=nl
You can decide your own pace. Which helps you to not go too fast.