Travelling to Copenhagen with 9 month old

[Stampy03]

We are going to Copenhagen from October 14th - 17th, I am currently looking for some advice on what would be best clothing to put our 9 month old in. It suggest that the weather in October is between 3 degrees to 17 degrees, our son does get easily sweaty so I do not want to over dress him. - But would it be best to buy a fleece or padded pramsuit or to take a snowsuit? or just take all?

Regarding headwear we have a lot of beanies and woolly hats, but should I buy a hat that also covers his ears?

And lastly, getting around town - can you buy a travel pass for the amount of days we are there and is it best to purchase when in Copenhagen or purchase online beforehand?

That sounds very similar to here, so whatever you'd dress him in at the moment will be fine. I would just have a coat and cosy toes for the pram.

There is a travel pass https://dinoffentligetransport.dk/en/find-tickets/day-tickets/city-pass

but it may be worth getting the copenhagen card depending on how much you are doing. It includes the metro(including to airport) and loads of attractions. You can go to Tivoli once on it too. It's has an app, you can buy it in advance and activate it, as soon as you arrive.
https://copenhagencard.com/