About to be a Grandad but never been a Dad

Morning all,

Just joined so sorry in advance if I'm coving ground thats been covered before...

Basically my wife and I are about to become grandparents (due next week!!) which we're both really excited about. However I've never actually been a Dad and I'm kinda worried that is going to make things weird in some way.

As a bit of background, I'm 43 and my wife a bit older (I'm sure she'd rather I didn't say) and we've been married 12 years. She has two kids who are both 30'ish and married so as you can see I'm not 'new' into the family and both my stepkids (and their partners) are great and we have a lovely relationship so I'm very lucky and have no problems at all on that score.

Growing up I always assumed I'd become a Dad at some point but it just never happened and I knew when my wife and I got together that I was shutting that door and I was ok with that as the desire to be a Dad was never massivly strong, more of an assumption that it'd happen than a need for it too if thatr makes sense... That choice bothered my wife way more than it did me (and I think having me a Grandchild now is something of a relief for her...)

So as you can see in many ways Grandparenting is perfect, the best of both worlds I hope! But I worry... Not about the big things, as I say I have a lovely relationship with the parents to be, they have made it very clear the 'step' grandparent tag isn't something that even enters their mind, I'm a grandparent in every sense so thats amazing.

It's the day to day things I worry about, the knowledge that at any point I'll be the least experienced adult in the room when it comes to childcare, the feeling that I will always be defering to someone or asking advice about things that my wife, other grandparents (and the parents) will know instinctivly. I appreciate this is an entirely selfish worry and in a couple of months time I may wonder what I was stressing about. I guess I just want to feel like I'm helping and being 'a good grandad' rather than being trained if that makes sense....

I'm probably rambling now, its too early in the morning to be concise perhaps... I guess it would just be nice to hear from any other Grandparents who were/are in similar situations, I've googled for books but not found any (althought to anyone else in a similar situation I'd recommend not googling 'Stepgrandparent' as that phrase paints a terrify picture of impossible relationships!)

Anyway, thats me, hello all and have a great day!