Leaving newly adopted 5mo puppy with family for a few weeks over the holidays

Hi all! November 13th my boyfriend and I were approved to pick up our dream puppy, being adopted from Romania (we live in France). The puppy is currently living in a foster family in Romania, so it already knows life inside a home. December 6-29 we had a trip booked to the United States to visit my family over the holiday season, but now we are considering moving it to December 16-29 instead. Either way, we would leave the puppy in the countryside with my boyfriend’s family for these days, it would be extremely well taken care of and rarely, if ever, left alone. It’s really unfortunate timing, but also we won’t not go to the states for Christmas. After we get back at the end of December, we won’t travel for at least another 7 months, so everything will be stable then. Moral of the story is, would it be the worst thing to have this instability in the beginning with our puppy, even if we are leaving her in trusted hands? If it’s going to be extremely detrimental we may cancel our adoption of this puppy. Let me know your thoughts 🙂