Hi, and welcome to the forums. I guess many of us have been in the same place as you. When you were told you had Type 2, did they tell you what your HbA1c reading was? For me, the good news was that a low-carb lifestyle brought my blood glucose levels down really quickly - within four months - and took away a lot of the symptoms I'd been having. It isn't as scary when you realise it's within your control.
In the UK you can't advertise biscuits and chocolate as "diabetic" any more, so I'm unclear about what you're referring to. Both biscuits and chocolate (until you get to the bitter high cocoa levels) are generally very high in carbohydrate and sugar - and for these purposes they're essentially the same thing. There are also carbs in milk.
Has anyone talked to you about doing your own testing, before and after you eat? You need a glucose monitor and test strips, and the recommended way is to test immediately before eating and at two hours afterwards. That way you can see what impact the food you ate has on your levels.
I found it worked for me to reduce my carb intake to around 20g/day - that's the rough equivalent of one apple. Other people manage without being so extreme - 100-150 g/day. The thing is, we are all different and you need to find out what works for you.
I found this forum a great source of advice and support after I was diagnosed. I don't want to swamp you with too much information too quickly, but my best advice would be to read through the forums, look at the success stories, and don't be afraid to ask questions.
Best of luck.