BB出頭泥,好蚊憎

It's not the 頭泥 make him frustration and insomnia (unable to sleep). Your statement include two questions:

1. The problem of 頭泥

頭泥 is normal and common for a newborn baby during her/his early few month of life, they will actually get off by itself. But you can use some olive oil after bathing to rub his head softly by hand or by a baby comb.
Do not try to peep it off by any method. It will drop off later and baby's head and hair will grow healthy.
The baby dose not feel any discomfort of this 頭泥, it only you --parent feel very discomfort when see it. So no worry on that.

2. Problem of baby not sleeping well
You need to find out the reason of why you baby not sleeping well.
Firstly, I think your baby is about 2 months old. He/She should sleep for about 18 hours per day. When you said your baby not sleeping, I think you mean your baby cannot sleep during the night.
If it the question, you must ask the carer how many hours he/she sleeping during the day time. Please try to regulate the time of sleeping so that you can enhance the baby sleeping more at night.
You can perform some baby massage and baby exercise before sleep and after bathing, it can let the baby relax more before sleep.
Also, keep the room warm and quite; and do not let him expose to too excited situation before sleeping.
Try the above suggested method and see whether it can help you or not.

bb 出頭泥, is normal ga!,
Don't worry, It will be clear when your bb will be over 6 month old.
You can use some wet cotton with baby oil, gentally clean on your bb head, please be carefull to heard his head.