Well, the only thing that's going to push your readings higher is the amount of carbs. Now that you're testing, you can start to work out how many carbs affect you and which particular foods you're likely to have a problem with.
The morning reading at 7.5 is not disastrous - it would be good to know if you're going to bed with a level that's higher than that. I find if I've got a high reading at 10pm, it'll give me a higher reading at 6am.
For the crispbread, it'll come in a packet which shows the total carbs per 100g and possibly the total carbs per crispbread. Ignore the 'of which sugars' bit - it's the total carbs you're counting. Cheese has no carbs to count, so if you're only having crispbread and cheese then it should be easy to count the carbs. With a pre-meal reading and one 2 hrs later you now have an idea of what crispbread does to your levels.
I suspect that 2 weetabix is quite high - that's about 26g of carb. Could you have 1 weetabix and perhaps a bit of greek yoghurt or egg or an omelette? It's all a bit of a game in the first few weeks of testing, finding out what your body will accept. I can eat porridge, for example, without it hurting my levels even though there's 29g of carb in it. That's because it's slow acting - and I mean real porridge not the packet stuff.
So keep at it - if it comes in a packet then you know the carbs. I use the Collin Gem Carb Counting book which is excellent for calculating everything else. You'll soon build up a 'safe' list of meals and snacks to work from.
S