Vitamin D Supplement

My LO is 3mo old. I'm exclusively giving breast milk and have been giving vitamin D daily since she was a couple weeks old. We just left for a trip and will be gone for two days and I forgot to pack her drops. Is it ok for a baby to go two days without vitamin D? Should I buy some once we arrive or is it not that big of a deal? Also, if she does go two days without it, do I need to double up when we get back for two days? I don't want to overdose her. I'm still taking my prenatals and drink plenty of milk but I'm not sure that will be enough. Thanks!