My boyfriend's mother keeps telling us we're doing things wrong with our son because he doesnt sleep…

My boyfriend's mother keeps telling us we're doing things wrong with our son because he doesnt sleep through the night yet(well,i didnt sleep through the night at this age either). She said he won't sleep because he's in the same room as us. I told her it's for safety reason. Well,he'll sleep better if you have him in a different room snd warm. Well,I know that he will sleep less if not around us. My boyfriend has to open his big mouth even and tell them,"well,he wakes up because she gets up every 20 mins to piss" ugh i wish he'd keep his mouth shut especially because he sleeps through a lot of it.