I know you said not to judge but I will you should know that if you don't provide receipt it is obviously means that you are working under the table! What I read from your posts I dont think you are that naive.

Regarding your situation, you shouldn't be panicking as the new family hasn't started yet. When they start then you can collect your receipts for the tax purposes. Since you did not provide receipts to your current clients so far I don't think you should be claiming anything from those expenses.

I'm very anal when it comes to taxes and I belive if a person can manage a business they should also be able to know about basic taxes. Even if we use an accountant it is our responsibility to check everything is by the book.