In this short, Coach Court reiterates, the only healthy way to get an ex back is by going no contact. This will allow that person to come back on their own (if they choose) and it must be with no intervention from you.
In this video, Coach Court walks thru 5 things that he suggests doing, before a person is considering breaking 'no contact'. These may not be the right steps for everyone, so please consider your own personal situation.
In this video, Coach Court gives three examples of real life situations of how a secure attacher would react to a dismissive avoidant. He talks about how they've respond thru texting and in two other relationship dynamic situations.