I will be travelling with an 8 week old. I am going to order the Aptimil readymade formula to boots at the airport but just wondering what you travelling pros think is the best option. My LG drinks up to 200ml per feed every 3 to 4 hours. I don't know whether to buy the small 200ml bottles of readymade and put them in her usual MAM bottles (if so how do I clean and sterilise between feeds? Or do I have to take a load of bottles too?!) OR should I get the large 1L readymade (and same question applies regarding sterilising) OR should I get a pack of the starter bottles (70ml) with the teats and a large 1L and top them up? (Is this even possible with these readymade bottles? Does the teat unscrew and screw back on? I've not used these before). I've attached pics of the bottles that I've explained. Thanks 