You went quiet eleven days ago. You know the exact number because you have been counting, and somewhere around day four the count turned into a test you are taking on their behalf. The question changed from "how do I get through this" to "is it working on them."
That switch is the whole subject of this page. No contact is one behavior with two different psychologies underneath it, and the two produce different results for the person doing it.
No contact as recovery means cutting the channels that keep the relationship's feelings alive so that yours can settle. The evidence for that version is direct. In a 28-day diary study of young adults after a breakup, contact with the former partner slowed the decline of both love and sadness. Staying in touch kept both feelings running. Silence let them fall.
No contact as retrieval means going quiet so that the silence does something to them. The evidence for that version does not exist. No study measures how often avoidant exes return after a period of no contact, and every page that gives you a percentage, or a stage-by-stage schedule of their regret, is describing a hope rather than a finding.
The distinction matters because the retrieval version is still pursuit. The pressure has moved from your thumbs to your silence, and it will show in the first message you eventually send, because a message built to end a wait carries the wait inside it. An avoidant ex is exactly the reader most likely to feel that weight in a single line.
So the answer to "does it work" has two halves. On you, reliably. On them, it does one specific thing, described next, and that thing is a tendency you can understand rather than a mechanism you can aim.
