Bad behaviour

I think it is a result of lockdown. DD1 has children this age and has the same issues as do most of her friends. Families have been in such close contact - schools closed and parents having to try to ensure school work is done while working from home and occupying younger siblings. Their world has changed - no grandparents, cousins, friends, school. Not able to go to the park or do any of their normal activities and even though parents may have spent hours doing activities with them - it is all a new kind of livings you have to try and go with the flow and maybe relax some rules - I don't mean not reminding them about manners and not fighting but just accept their mental health has been affected the same as adults and it is all so strange. Your 6 yo grandson will become close with you again but for now he will be close to Mum and Dad and have to rebuild his relationships with other relatives. My 6yo grandson is often rude to his Mum and has spectacular meltdowns occasionally, his 3 yo sister is copying him and developing her personality and sometimes rude but not let away with it. 2 yo grandson - DD2 - has been living with us as well as Mum. He seems too young to be affected much though we are minding him and not the childminder. He is developing very quickly but seems to be as normal compared to his cousins so it looks like an age thing. He has also stopped any activities but is very happy throwing stones down drains, into rivers and his favourite playing in mud!
What I am trying to say is that you are not alone and it is more than likely due to lockdown and nothing to do with parenting or being naughty but a child's response to an unimaginable event in their lives.

Been in your position, Alyppoole

However the boys now are 12 and 9 and the change in behaviour is almost unbelievable.

Up until recently they fought, endlessly.

Now they're a great pair of buddies.

So patience could be all that's needed

Along with the reminders of manners!

Good luck

Yes I Understand how you feel Aly, we have a similar situation. Perhaps the enforced isolation has not helped and hope maybe things calm down, but it’s very hard when loved GC can be so difficult to manage. It takes the pleasure out of what should be a happy and enjoyable time .