Hey hun,
Check your steriliser for instructions as sterile periods can vary- from as little as 20mins Im told

. I used to cold water sterilise, however I stopped sterilising for Felicity altogether last week and alls dandy, stopped at same age with ds too. As long as you wash well in hot soapy water then it really isnt an issue.
My sma tin says keep a used milk no longer than two hours, I just stick to that guideline..
Can I ask a Q here? Can our lo's have cows milk on cereal? I know not as a drink till 1yr, and ok in cooking, but I read conflicting info on adding to baby cereal!?