Here are some tips to make a perfect non sticky sabudana khichdi:
In a deep vessel take sabudana pearls. Wash them under running tap water for 4-5 times till the water turns almost clear. This takes most the starch out from sabudana which is the main reason why the khichdi tends to get sticky and mushy.
To the washed sabudana, add water, the level of the water should be 1 inch above sabudana. Let sabudana soak in this water for 30 minutes.
After 30 minutes, drain the water completely from sabudana, cover the vessel with lid and keep it overnight or for atleast 7-8 hours at room temperature.
To check if sabudana has been soaked properly, press sabudana pearl between your fingers. You should be able to smash it easily. If not, add little water and keep aside for 30 minutes.