I am applying for citizenship.Problem is I forgot to do the change of addrss. I sent it 6 months later.Should I just go with when I changed the address and not bother about correctness or should I write the proper addresses and explain that I forgot to change it in time. Is this a big issue for naturalization. Please help. I am going to apply in the next month. Thanks as usual.

Not an issue. Proceed with N400 as usual with all correct info and do not bother with address change explanations.