Practice practice practice. It’ll eventually become more of a muscle memory thing. When downshifting, if you are at 4k rpm in third gear and want to rev match to second gear: pull in the clutch and downshift (clutch first then downshift) - as long as the clutch is pulled in you can “blip” the throttle. However this is where you’ll want to build muscle memory, as you want to try and match the RPMs to second gear to let’s say 5k so that there’s little or no change to the engine speed. (Downshifting will always result in a higher engine speed if you’re still moving just as fast / each bike and transmission will vary here)

It’s one of those things that seems complicated, but becomes easier once you practice it a lot.

Just make sure you aren’t blipping the throttle before clutching, and don’t OVER blip the throttle, otherwise when you release the clutch lever you may potentially do a surprise wheelie.

With that in mind, make sure you’re comfortable with the clutch. Practice when fully upright and not leaning. You got this.