Can one household members isolation end before another?

[Alldayeveryday200]

Son's symptoms started Thursday and positive result Sunday so will isolate for 10 days until this Saturday. I tested positive today. Will isolate until next Thursday. Can son's isolation still end this Saturday even though I've only just received my positive and will still be isolating?

If it is just the 2 of you then his will last 10 days. He would have to re- isolate another time if a 3rd person developed symptoms at some point.