| Viranth, the Novorapid covers your food and adjustments. The trick is to find how much you need to take for every gram of carbohydrate you eat. We usually describe this as units per carb. The funky part is that it can change at different parts of the day. WHat you did before bed was more-or-less correct.
The Insultard (aka NPH) covers what's called our basal secretions, that is sugars released from our body's reserves. This happens 27/7. The rate can be steady but it can also be very up and down. We all have our own pattern that is actually quite consistant.
Now your problems. Eating and taking insulin before going to bed is very risky, especially where you are new and have no idea what you are doing yet. You could have overdosed and had a nice hypo event. One thing you may find is that you naturally drop in the middle of the night which means you may need to take much less insulin for befpore bed meals. I'd have set an alarm 2 and 4 hours later to get up and test.
Yes you needed the Insultard very much. Never skip it. I also suggest you find a better insulin. That is a medium term insulin which many people have had problems managing. ASk your doctor about Lantus or Levemir.
Yes you need more Novorapid for that afternoon meal. There is a direct relationship between it and the carbs you ingest. Learn your I:C ratios. Test often, vary meal sizes, and keep good records. You should be able to find a ratio that keeps you in range for most foods. large, high fat, or high protein meals are always trouble. | 
