Left over expressed breast milk -storage question

[Rubbishnipples]

My 9 week old dd is exclusively breast fed (which has been no easy feet due to incredibly sensitive/cracked nipples throughout -but we are still going). She now gets a bottle of expressed bm at 10pm to give my nips a rest.

last night she only had 60ml (offer 130-150ml) and I hate throwing away the left over expressed milk as I don't get a lot at each expressing session.

If she doesn't finish this bottle can I store in fridge and offer next day? Some guidelines say no and some say yes. I am interested to hear what others have done.

Thanks

this is all personal but

if the bottle was warmed up and only given once a day I would probably air on the side of not.

if given cold and not out for very long I would

if feeds are given quite frequently, so I expected to give her the bottle in a few hours I probably would.

Why not have two smaller feeds in the fridge - that way if she only has 60mls out of a 70mls bottle there's no great loss and if she's already had 70mls and still wants more then she's not going to be screamingly hungry and may be more amenable to waiting for the milk to warm (or she may take it cold!).

plus that, which I also meant to add