Reducing dummy use

[Lcw29]

My son is 2 in February and loves his dummy. I have now decided to only use it for sleeping . However I've noticed he is now chewing things an awful lot. He has all his teeth except possibly the very last molars although hard to tell lol

Is this normal? The chewing?

Some children are very 'mouthy' usually stops by 3. He's also been used to having something in his mouth with the dummy.