How long will it stay ‘sterilised for’

L🌝🌸

Probably a stupid question 🙈😂 but I tried breast feeding my first and it didn’t take so I swapped to bottle feeding, I used the hospitals bottles so when I got home baby struggled latching on to my bottles.

This time I’m going to be prepared and take my own tommee tippee bottle in just in case I have the same issues. My question is, I’m packing my hospital bag this week, if I sterilise the bottle now will it be safe to use when I go in? Or will it need sterilising again?

Thanks x