Twin measuring small!

Becky
Hello all! I'm 24 weeks with fraternal twin girls! My last doctors appointment at 22 weeks my doctor informed me that twin A is measuring 2 weeks and 2oz behind twin B and that he is concerned for her, however he didn't order bedrest, didn't mention anything about steroid shots etc. They aren't sure if she's just growing at her own pace or if there's something wrong with her placenta. Since the doctors appointment I have upped my protein intake and I'm getting as much rest on my left side and ill see how she's doing on Wednesday. Has anyone ever ran into this problem? I looked all over the internet and this seems like a common issue with twins. Any input would be greatly appreciated 💜💜