its a good idea to taper down off the test e anyways.

enanthate has a 2 week taper out time, and you need/can fill that time with a fast acting ester. prop is perfect. all i would do is wait until 3 days after my last injection of test e, and start the prop eod for 3 weeks. 3 days after your last shot of prop, start your pct.

peace I4L