I have only given EBM a few times to my son and it's usually fresh. I am going out today ( WOW!) and my Mom will be giving him a bottle. My question is, can she just take the milk out of the refrigerator an hour before she's going to give it to him? Will it warm up to room temp and be OK to give him? I feel dumb asking this question. I've been breastfeeding for 11 months and am quite clueless when it comes to this.