Size difference in di/di twins

4 weeks ago (at 19w3d) I went to my first appointment with the MFM. Baby A was measuring 7 oz and baby B was measuring 10 oz which was a 30% difference. I went back yesterday (at 23w3d) and now Baby A is 13 oz and Baby B is 1 lb. 5 oz. We go in two weeks to have a fetal echocardiogram, and then I go back to the MFM in 3 weeks for her to do another growth scan. 2 weeks after that I will go for an MRI to hopefully get more answers as to what’s going on. This is due to baby A having Dandy Walker Variant. At 28 weeks, I have to start going weekly for growth scans. This is such a big difference in sizes, and I’m just wondering if anyone else has gone through this and can share your experience.