" Mother, help me( to) do this homework. "
We do not usually omit "to" after "not" :
" How can I help my children not to worry about their exams?"
Help can be used without a Noun or a pronoun object :
" Everyone in the village helped(to) build the new church".
Or with a Noun or pronoun object :
" Can anyone help me(to) fill in this fax form?"
In the passive, "to" is obligatory after help:
I was helped to overcome my fear of flying".
Help+Passive infinitive is possible, though rare:
" I am sure this treament will help him(to) be cured".
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