9 year old boy snores very loudly and has night terrors what can we do to reduce his snoring and nightterrors?

Consider ENT: Tonsillar and adenoidal hypertrophy can cause snoring in a nine year old child. Snoring in any child is not an acceptable situation as it suggests airway obstructive breathing and/or OSA at night which leads to non-restorative and restless sleep, excessive daytime sleepiness, behavioral symptoms resembling ADHD and nightmares or night terrors. It can contribute to fatigue and excessive weight.

Snoring: Snoring can be a sign of sleep apnea. This can prevent adequate rest and should be evaluated. There's no treatment for night terrors, but you can help prevent them 1)reduce your child's stress 2)establish and stick to a bedtime 3) routine that's simple and relaxing make sure your child gets enough rest 4) prevent your child from becoming overtired by staying up too late

Night Terrors: Share: own dreams & give permission for openly discussing issues in his dreams. Be extremely careful to NOT put down/dismiss any of his fears/concerns; they are obviously important & terrifying to him. By listening carefully & taking concerns seriously, you are powerfully supporting his importance/value & offering him chances to open up about his fears so that solutions, workable for him, might be found.