Looking for advice/ positive vibes

So my 2 week old has tested positive for rsv (on Thursday) Sunday she was admitted in the er.. were still here. She was admitted due to her oxygen level being in the low 80s she’s still on oxygen she’s on the lowest setting but she won’t be aloud to go home till she’s off oxygen for 24 hours. And every time they take her off her number drops right back down to the low 80s. I’m just wondering if anyone’s had a 2 week old with rsv or if anyone knows what’s gonna happen if she can’t come off oxygen on her own..... I’m going crazy I’m alone here and can’t have anyone come. How long could she need to be on oxygen for?