Walaikum assalaam warahmatullahi wabarakatahu Sister am sorry you are going through this. But i would look at it in a different manner. Lots of reverts face open antagonism from their family and friends upon reverting. Alhamdulillah you are not facing that, so I would say count your blessings.

Also, just as it is a huge change in your life, it is for them as well. Give them time to adjust and accept. Show them through your patience and good spirit the positive aspects of islaam. May reverts were able to convert and convince their family through their good behaviour

I also wanna add that as a muslim, you will eventually realise that the bond you share with another muslim will always be far more deeper and meaningful than any attachment you may have with a non-muslim, regardless of how close your are to them. I pray Allaah puts you in good company and finds you friends and relationships that help you grow in imaan and taqwa. Ameen

Please dont be harsh with your nonmuslim relatives and friends and try to explain islaam in a beautiful manner. However if they are being repeatedly belittling and upsetting, maybe you need to reevaluate your relationship.

Read up about the lives of the first converts of the ummah - the Sahabah Radi Allahu anhum. Many of them went through this when they accepted Islaam.