Pnemonia in 2 month. During dr visit.

Hello Dr my baby is now 2 months old ..when he is 26 days old he is suffering from lrti as pnemonia he is in nicu for 9 days and getting better but after a week again he catch cold during Dr visit...his breathing his fast retractions again hospitalized and relive after 10 days Dr said it's rsv virus as per test Jo humne karwaya tha virus it's been 16 days ...he is discharged within 10 days but his chest retraction not gone fully during breathing...he is gaining weight active Susu potty everything normal I want to know uske retraction kab kam honge..Dr bole ki dhere dhere honge kam but bahut dar lagta hai as he is only 2 months plzz reply🙏ki kya kare koi medicine hai ajj hi usko pnemonia ki vaccine lagwayi hai and Jo lagtinh 1.5 month m