Heather, just quickly- I read somewhere the other day that some baby's do go a bit quiet around the 5-7 month mark, maybe he is just having a quiet time and not actually regressing? He'll probably start chatting away like mad again soon! I notice Hayley has some quiet moments too, some days she won't "talk" much at all and others she'll hardly shut up (especially when she gets on her raspberry blowing or gurgling streaks!). I'm so sorry your PIL are such a pain in the bum! Maybe that's why he isn't rollling yet (not that it means there is anything wrong with him, he might be a more 'emotional' person rather than 'physical' iykwim), as he never really gets a chance to wriggle on the floor as your MIL is always picking him up? I hope you find somewhere to move to, as hard as the move might be with a baby it will definitely be worth it!