@ilovejesus56129 First of all, any score is a good score! That was tiring was hell. Everyone at my gym said they felt like they should've taken the 21 reps slower. Unless someone's going to make it through with zero breaks, might as well plan to break early and slow your pace instead of burning up too fast. If you save some energy you can speed up at the end, but if you use it up early you're not gonna recover it.
My coach gave me what seemed like an obvious tip and maybe just a me thing. I would do my burpees basically having my whole body off the ground and kick my feet back and land with my hands and feet at the same time. Much less strain to lean over and put hands down and then kick feet back.
Or step back and step in for the burpees.
Both are less strain, slower yea, but if it keeps you from taking breaks and able to keep a steady pace then that might be a way to reduce burpee breaks AND shoulder strain.
Example here, around 9-10 seconds in slow motion you can see the feet are coming off the ground as the fingers are just starting to touch, so the top of the shoulders will be absorbing all that weight coming down from standing. Simply leaning down and bracing with hands first then kicking back (or stepping back) could take a major load off