Hi, I have a 3 YO in Huggies for bedtime and they last all night from about 8pm and most of the next morning
Sometimes it is about 10am before he will get dressed and put his pants on. However, he only drinks milk and NO juice which makes him pee more so he might not wee that much. He is in size 6 as the bigger sizes are more absorbant.
I do however second the Minki standard. I told him he could wear nappies like Lucas and he didn't care how big it was! It lasted all night and in the morning he told me he had done a wee in his bed so he could obviously feel the wet which he cant in sposies. Might be worth trying cloth and the night toilet training might follow if he can feel wet without wetting the bed.