Is it normal to cuddle with your mom as an adult?
Yep.Totally normal
Yes, cuddling with your mom as an adult can be a completely normal way to show affection and feel close. Families have different comfort levels, so what matters is that you both genuinely feel comfortable with it.
Lots of adults still hug, cuddle, or lean on a parent. For some families it’s an ordinary bit of affection; others are more reserved, and neither style means you love each other more or less.
The only real measure is whether it feels welcome and comfortable to both of you. If one of you isn’t into it, a little space is fine too—family affection doesn’t come with a required level of cuddly.