I also had a new ENFit G tube kind of dropped on me. It was a pain to switch.
A few things I noticed after I had to switch to G/J ENFit (they switched with no warning, but I was in hospital so I had time.
It is easy to over tighten the connection, so have pliers handy, needlenose is best.
Flush early and often. If the formula isn’t moving it will clog up, especially it connection area.
Purple is the connection color. Things that connect to ENFit are purple.
Feeding bags have both connections, unscrew the tip for purple. Older bags anyway, new bags have only ENFit.
I really like ENFit, I have less worry of connection popping open and syringes pushing free of tube.