I just started my baby with puree. However as im a working mom, i do not have time to prepare fresh puree fast as my LO is in ifc and reached home will play short while then sleep. So i need to give her puree immediately when i reach home. Can puree be pre-prep and store in fridge and is it advisable to do so? (Lost nutrients etc?)

Yes, you can! If you intend to store them in the fridge, can only store for 3 days max for vegetable and fruits puree. Can keep longer if you are storing them in the freezer. Do take note to keep them in the upper shelf in an airtight container (not at the door because the temperature will change whenever you open the door and will cause bacteria)