Good suggestion fourm member.
My wife is the source of all garden knowledge here, but I get hints and overspill from experts.
Many wonder why a beloved new plant doesn't flower, and the Experts often reply "You are being too kind to it, helping it to grow"
Advice - starve it, neglect it, in other words stress it a little and force it to face the fact that it needs to produce some seed and now is better than later.
Our plums are old and currently losing whole boughs of ripening fruit. Self pruning?