Hope this is the right place to ask but how do you know where to inject? I have been told it must not be more than once a month into the same site and each injection must be an index finger apart but I can’t remember exactly where I have injected so how do you know? I am feeling totally overwhelmed having been diagnosed three weeks ago at the age of 72 and having to inject 4 times a day for type 1 diabetes. Thank you.