Don’t forget to whisper the rested beat to help you count it.
If 70bpm is too fast then slow down your metronome.
You may find 8th beat rests (from Pattern 8 onward) more challenging. This is due to something called syncopation, which you can learn more about here
If a pattern is too challenging then play along with the video, to better understand the rhythm.
I also suggest printing out the worksheet and writing out the numbers above each beat. When there’s a rest, write a smaller number or + to indicate that it’s silent.
Click on the worksheets below to enlarge and print.
CORRECTION: In the video in Pattern 11 I missed the upbeat of the 4 (and).