milk bottles

From birth till 2 months, my lo was bottle fed so I had 8 120-mL bottles during the day and wash and sterilise them in one batch. From 2 months till 5 months, she DL and drank from bottle and would use 4 120-mL bottles in a day. Now, she’s 9-months old and 4 pcs of 260-mL bottles is enough for a day since she already eats solids at lunch and dinner.