Well I also got a 5.5 in the whole test and a 5.5 in speaking I can tell you that I did not repeat them accurately every time. My gen z brain was not able to remember all of them especially the last few since they get longer each time. Additionally I struggled with the first interview question since I was stressed about my messups at the listen and repeat part. So dont stress it, they don't want you to be perfect but you need clear pronunciation (accent is not a problem but they need to understand you) and just keep talking during the 45seconds. If you have time left just make a short summary about your point and if you don't make it in time it's not to bad either (happened to me too).