Hey,
I know your heart skips a beat seeing the possibility of your baby getting hurt, but I guess you need to hold yourself back and ignore him. This is a phase in many kids and this may be one in him.
Please try and ignore it and this is only improve if you let him be at that time, and go to other room and do not be in front of his eyes. When he would know that his act is not receiving any attention then slowly and steadily he is going to stop doing this.
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