Jerking is not normal. My CVT is actually very smooth between gears and under acceleration. Have the fluid level checked for proper level( no dipstick - requires special tool )and to see if it is burned. The transmission is most likely due for service anyway with that mileage despite Chrysler saying the CVT fluid is 100K+ capable( BULL! ).
Make sure if you have a trans service done the correct fluid is used. ONLY use a CVTF+4 fluid( Nissan has one that is the same thing too ). The CVT uses a very special fluid so don't use regular MOPAR ATF+4 or other brands of regular trans fluid in it.
2011 Jeep Patriot