Discreet WFH

I’ve been working abroad in a WFH setup, but from August to second week of September , I’ll be back in my home country for a really valid reason. I asked my boss if I could work from there—she said no. We have Zoom calls almost every day, so now I just have to keep things low-key. I wouldn’t do this if it weren’t necessary, but I need to make it through these weeks quietly. Any advice or tips to not get caught?