Whoa, bro. If you're having that hard a time at the beginning of this then you need to step back on everything giving you problems. There shouldn't be any doubt at all about making the lifts at the beginning. I have a feeling, also, that some of the cutting sups severely screw with your recovery ability. That just seems like way too much pain and fatigue on the squats.
You know your body better than me, of course! Good luck
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