I Wash my toddler laundry daily because its smell awful due to dampness and food particle... But I will like to do alternate days because it's more economical... Do you suggest I soak his clothe and wash once every 2 days ?

This is personal preference.i prefer to wash my clothes everyday especially if it is damp and wet with sweat. Soaking it for too long is not good too. Actually kids clothes are small and easy to wash everyday. But again this is personal preference