Two years ago, I was not co-conscious with any of my parts-but I heard head-noises and when I started communicating inside they came to the surface and the noises made themselves known-that gave me information to help them feel better. I believe I am co-conscious today, but there is not total two way communication with all of them (but frankly a couple don't want to communicate and they don't cause trouble and prefer isolation-so I'm not pushing them right now)-but there is one way communication between all of them with the biggest part of me (self), and the strongest and most creative parts have two way communication and the most weigh in on really important decisions made in my life.
I do not fit with DID diagnosis-as I have only one ANP (that I know of-?) but I have a number of EP (child parts). When I reached out to my parts, and started acknowledging them, they were appreciative and became more comfortable and their feelings came closer to the surface. I do not use the term gatekeeper-instead I use protective parts I guess is the equivalent. Yeah, I bargain with those protective parts......as they can create physical pain and stop me in my tracks. Try if "you will allow X" then "I will do Y". I use please and thank you. I can usually get compliance or unstick my protective parts from their "duty" with a deal. But I have to know what motivates them to change their behavior.
A while back, I made a few mistakes doing this....I told my parts I could keep them safe in a situation....and then I was physically hurt in that situation.....yeah so very triggering....lots of head-noise for a week, and then there was trust-building all over again because I didn't keep my promise. That took me back in the communication dept....so follow through with compromises/deals is a must. Over time, I built trust with most parts through play, hobbies, and fun things-food-shopping for special items, then when I knew what was reinforcing to specific parts, I had something to bargain with (some type of play, fun, recreation,food or outside activity) So, I worked from a trust-building approach and found out what reinforces each part's behavior-my protectors do like fun-even if they aren't first in line. Once you have a bargaining tool & know what motivates them then you can work to bargain and have executive control when you need it. When my parts are regularly reinforced....they are happy parts! ?My external life now is so much more predictable after getting to know my parts ...and then trust has been built. Think about how you'd strike up a relationship with anyone else in your life.....you get to know them first, their likes and dislikes, then you think about them and give them something they'd like just to be kind, and the relationship over time is mutually satisfying when there's communication and respect.
Don't know if that helps.