In 2019, I graduated with a PhD. (I am no academic so that was a massive achievement for me). I had started writing an article on the research however, due to personal circumstances, this was delayed. And then along came Covid. The discipline I did my PhD in was challenging under Covid as it was dependent on international travel. This necessitated having to re-focus my career in-country. One consequence was the article received less attention. I have recently thought about whether I can still submit the article for publishing or is it too late now. Is there an accepted time limit to publish PhD research?
And to add to the mix, during this time, I have had some further post-PhD insight/refinements that I would like to include in the article which wasn't part of the PhD. Are these okay to include in a delayed article?