I'm not all that familiar with your work or the critique thereof.
However, you might be overreacting or possibly misconstruing what the critique was trying to express.
What I mean by that is that a paragraph should be the expression of a topic: an idea, a thought, a premise, or argument, etc...
That then is followed by supporting material or explanatory material--basically expansion upon the original thought. This could go on for one sentence or several or a whole page full until you complete the thought. Possibly ending with a conclusion.
See this article:
Various educators teach rules governing the length of paragraphs. They may say that a paragraph should be 100 to 200 words long, or…
It could be that someone thought you were either breaking up your topics supporting material or even may that you were munging new ideas into the previous topic; things that should go into a new paragraph. The point being, you have to consider often what the critic is trying to say as opposed to what they said or worse yet where their words drew you.
The main idea is that you start with topic and move on with each sentence going forward--avoid circling back to previous points--and eventually reaching that moment of conclusion where you've exhausted the topic for the moment and it's time to go onto the next.
However. that doesn't really express all that you might do with a paragraph when it comes to creative writing. There might be a conclusion that you want to highlight to the reader and this you might do by removing from the paragraph and it its own paragraph of one sentence.
This way the reader might guess that this line is important.
Anyway, read the link I posted above--it should help.