Canadian moms that use pampers overnight diapers?!

I use pampers with my 14mo since he leaks through pretty well all other brands. The overnight diapers have been a game changer for us since he wakes often but not changing him has him settling so quickly where as changing him will take an hour or more to get him back down without a bottle. We use pampers overnight but he’s a big babe and size 6 is now too small…yet it seems absolutely impossible to find pampers overnight size 7 anywhere even online…any advice or suggestions where I can get them?!🫠