How to process the lengthy content using Gemini-1.5 flash

I have Title and its descriptive content and i wanted to analyze these two for grammar and spelling mistakes, it works fine for title as it is not having much text but in case of descriptive content if the word is misspelled or written in incorrect grammar so it doesn’t recognize the misspelled word or grammar but if i reduce the content and make it shorter then it easily analyze the misspelled and grammatical mistakes.

Possible solutions: I tried to divide the descriptive content in chunks and then process it but in this way we need to make more calls and it could be time-taking.

So what are the other alternative solutions for this problem.