Wk 6 Dating Scan

I had my wk 6 dating scan ystd. Was told that the placement and shape is good. However, baby is looking like wk 4 or wk 5 size. 😭 is there any way for me to help increase the growth rate? Will it end up in a miscarriage? #1stimemom #advicepls #pleasehelp #DatingScan