Guidelines on bottle feeding?

Kyleigh

FTM and I’m wondering what are the requirements for giving your baby breast milk from the bottle… is it really that important to warm up the milk or can I just let it de-thaw? What are the time limits for milk in room temp/fridge/freezer? Etc. I’m due in November and nervous to get back to working because I won’t be able to breastfeed entirely. I’ll have to rely on my fiancé to bottle feed properly and I don’t even know how to do it myself. I literally don’t know anything so any tips/tricks will be helpful!