Toddlers diaper leaking every night

My 2 year old can fill a diaper like no kid I have ever seen.. every night he is waking up because his diaper has leaked and soaked the sheets. We started in size 5 diapers so I sized up.. still leaked. I have tried overnight pull ups.. still leaked. No water before bed or during the night.. still leaked. We use luvs diapers and until the last few months never had a problem.. anyone have a kid who can fill a diaper and have a brand or type of diaper they love? Because once he wakes up at 5 with a leak, he is up for the day 😫