Hi, it is a lot ot take in and come to terms with. This is a link which could help you and your family :-
https://jdrf.org.uk/information-support/newly-diagnosed/support-newly-diagnosed-children/
Aawww, bless you. My granddaughter is type 1 like me, she is 9 yrs ( 10 in September) and was diagnosed at aged 2 1/2, so I have some knowledge of how you may be feeling. Just take little steps and honestly, it will get more manageable and a little easier in time, the forum is a good place for help and support.
Here is a section you may be interested in;_
https://www.diabetes.co.uk/forum/category/children-teens.46/
Take care