can i put my breastmilk in fhe fridge and after that put it in the freezer ?

Yes, but personally I didn’t do that. Was quite afraid of contamination of milk/build up of bacteria. For me, if I refrigerate my milk, it stays there till it’s heated up for consumption (within 1-2 days). If the milk’s meant to be frozen, it goes straight into the milk storage bag and into the freezer. No mixing of batches of milk. If I need more milk per feed, I’d warm up 2 packs later on.