Is it ok to pre prepare bottles if it’s ready made milk

[Bottlefeeding]

I’m using MAM bottles and ready made milk is it ok to sterilise the bottles each morning then tip in the milk and pop them back in the fridge before going to work ?

Baby drinks the milk cold and the person caring for her struggles a bit with the bottles and I know if I do them in advance they won’t leak everywhere

Sounds fine to me, no different to the milk being in the opened bottle in the fridge.