Need advice on Parag Parikh flexi cap direct fund. Should I book profits and switch?

This fund grew my portfolio a lot over a few years and a bulk of my MF investments have been there. However, the last 2 years have been very sluggish and the last year the portfolio has been on a decline. I've stuck my money there due to compounding benefit so far but I'm wondering if I should move the fund now before taking bigger hits. Would like to make an informed decision with some perspective here. Please let me know your thoughts