Yes, but only from my in-laws & here on YA. I imagine everyone else in our life probably thinks my husband and I are weird for co-sleeping with our son, but they don't say anything about it.
Try and ignore everyone else. It will be hard, but just keep in mind that they are not raising your child and don't have a say in it. It's not as though you are going to them for advice in co-sleeping and therefore invited their opinion. What they are doing right now is pushing their parenting style onto you, or, at the very least, giving you unwanted advice on how to raise your baby (and don't we all just LOVE that!).
You can try and be nice and say "thank you for your opinion, but this is how I've chosen to do this", but that doesn't always work. It might come down to telling them to mind their own business if they persist.
I wish you lots of luck. Dealing with relatives and friends who have differing opinions is not easy.