AWS CDK newly added data delay issue to display

I am facing data delay issue in my application. When I add new data it take to much time to display on live site but working fine when I attach live database with my local code.
CDK usually take 5 to 20 mints to respond but in my case it taking hours and some time a day.

Please Note: I am using AWS CDK with Typescritp, MongoDb, graphlql and Next JS application as frontend application.

I want now why this delay and how to fix this issue