What to do if I cant finish the main workout?

Hi everyone! Im doing FB sweat and im on my third day. I did legs on the first day which I'm still sore from, so I actually took an extra rest day before attempting this workout https://www.fitnessblender.com/videos/hiit-cardio-and-abs-workout-no-equipment-hiit-and-abs-low-impact-mods. However, I found it really hard to do and my heart rate was through the roof for most of it. I had to take like 5 min breaks between sets :( I ended up only making it to the water break.

My question is should I try to do this workout again tomorrow or should I just move on with the program?