Three hours prior is more than sufficient.
Keep an eye on the Schiphol website much closer to the date of travel. If you plug in your flight details, it will give you information regarding how busy it is, and the optimum time to arrive.
https://www.schiphol.nl/en/
See this example for the equivalent flight tomorrow:
https://www.schiphol.nl/en/departure...0240126KL1127/