Getting your bedside table height right makes a big difference to your comfort....

https://amumreviews.co.uk/should-bedside-tables-be-higher-than-the-bed/

Getting your bedside table height right makes a big difference to your comfort. As a general rule, your nightstand should sit 5 to 10 cm below the top of your mattress. This keeps your lamp and phone within easy reach while you are in bed