Once you are successful reading 12 hour clock times to the nearest minute, move on to reading 24 clock time. You may already be confident with this, but this video will help if you are not:

https://www.youtube.com/watch?v=6zwTu1-GzAA

Now you could try the Mathsframe game again but this time select the 24 hour clock option in the selection choices at the beginning.

https://mathsframe.co.uk/en/resources/resource/116/telling-the-time

Looking at an analogue clock face will help with these activities. If you don’t have one available, try making your own by drawing it, make it with post-its or print out the help sheet.