It's hard for me to give advice unless I watch you spar but with that said, make sure you throw a hard jab move your head and counter punch the aggressive fighter
Btw I find that with the body jab with this Tyson style I am not able to land any power. My trainer couldn’t feel it even through the pads. The regular body jab which doesn’t have your head to completely offline seems to be easier to put power on
You have to step forward with the lead foot and drive off the rear foot as you slip to the right hand side to drive the body jab and get power. With that said, the body jab is not meant to be super powerful. It is the set other punches up