I have concerns.. worried

I jus give birth not long ago, living in the same household with my hub family.. my sis in law bf keep coming to our house stay overnight..he is not vaccinated yet, high risk to spread the virus to us, ..and recently there are so many unlinked cases out there.. i hope he dont come to our house so often but i cant stop him from coming...what should i do? I hope govt can hv temp rule to stop ppl visiting/mingling with different household ppl...😩