Plant looks pretty healthy but yes, there is a bit of nutrient "max out" if you will. Don't completely cut off your feeding, just cut back a little bit.

Make sure you're watering properly as well, far to often people water just enough to hydrate the medium. This is wrong.

Always, ALWAYS water enough so that you have a good 20-30% run off from the pot and always dump that water out.

Your plants will love you for it.