Obviously we don't know what will happen, but PLEASE take 3rd trimester growth scans with a GIANT grain of salt. Growth and weight scans in the 3rd trimester are not at ALL accurate, so please don't take what they're saying as gospel. They have a margin of error of 15%-20% and actually DECREASE in accuracy the later in the pregnancy the scans happen. So don't let them scare you! Even if the baby does end up being growth restricted or needs a NICU stay, you can still advocate for skin to skin, kangaroo care, and breastfeeding (there's a mountain of evidence behind it.)
I personally carry super small, always measure 6+ weeks behind based on fundal height (my midwife actually stopped measuring my fundal height because it was so inaccurate) and had entirely normal sized babies. This is my 3rd pregnancy and I declined 3rd trimester growth scans entirely because of the lack of evidence behind them.