Change gynae at 20 weeks

Hi mummies.. I’m first time pregnant, i need your advice can i change gynae at 20 weeks ? I want to change to KK with Dr.Sim Wen Shan which is she is Specialist high risk pregnancy. Do i need give my history result from my previous gynae? Like NT scan, blood test, NIPT test result i do 2 times but no result, my gynae advice to do the Amniocentesis but I don’t want. My fetal measurement all good and normal. #advicepls #pleasehelp #firstbaby #firsttimemom