HELP!! 4 week old baby RSV..

Hi guys, can anyone help! Daughter (4 weeks old) was admitted to hospital on saturday for low oxygen and struggling to breathe.. she was discharged yesterday! Im wondering if theres anything i can actually give her.. everything seems to be 2-3months +!! Ive checked baby vixs.. not sutible.. the calpol vapour plug in.. not sutible.. nothings sutible!! Checked online at a vix humidifier.. not sutible!! Is there anything you can recommend that has helped your baby? Or youve used and its been a god send! Thankyou