Formula delivery

Hi, so hoping someone can talk some sense into me ! My second baby is due in a couple of weeks and like with my first I intend to breastfeed however my first was big and needed formula top up every now and then for the first couple of days until my milk came properly in.

This baby is set to be bigger so I’m preparing to do the same I’ve ordered a pack of the ready made Aptamil (ones with teats) from boots and had dispatch email saying coming via Royal Mail. I suddenly had a thought this afternoon as to wether the milk might spoil being in the back of a warm van given the weather is a bit nicer and could be in there all day?

I tried to do a live chat with Aptamil but that wasn’t very encouraging as they told me it should be stored in a cool place and can generally withstand up to 20 degrees.. I figured its hotter than that on maternity wards and in changing bag on summer day.

Just wondering if anyone can offer any advice 🤦🏼‍♀️ ( I know I’m being neurotic!) x