What Can I Do To Help My Toddler Manage Sleep Disruptions And Breathing Issues From Enlarged Adenoids?

My 2 yr 10 month old is having difficult nights, GP said he has enlarged adenoids and has referred to ENT paediatrics but I’m still waiting for consultation I am really struggling with sleepless nights as he wakes distressed and gasping at times and goes through phases of snoring and difficulty breathing, it is really stressful for us both Is there any recommendation in the interim while I wait for this contact for ENT and i am concerned of the longer term effects of this poor quality sleep he is having presently Thank you