This is probably a bit OT but hope someone can help.
I'll be traveling a long International flight from SFO to Sydney Australia in a couple of weeks or so.
I have medicine that needs to be kept cool.

I have a special container that has ice pack which the medication will be stored in.

I know I can take this through pre tsa as it will be a frozen liquid (the ice pack) but during the flight I'm sure it will melt.

Can the cabin crew freeze them for me if needed?