Carol,
I am concerned that you are shooting relatively blind. Please put your bg levels for the past few days on this forum and specifically ask for N help. (You might change your title and add N) There are a few people on the forum who have experience with it and can help you. 53 is a low number - not dangerous yet. 40 is when you start worrying and reacting. But the N is bringing him down hard. I think you need to know how to give it in a safe way.
Here is how you can put your bg levels out until you get a spreadsheet:
I am just pulling numbers out of the air - you would substitute your actual times and numbers
5/21
am bg ### (this is the morning bg level before food) #units of N Fed (whatever you fed and how much)
+4 (this would be a bg level you got 4 hours after the morning shot, for example)
+6 (6 hours after the morning shot)
pm bg ### (evening bg level before food) #units of N Fed (whatever you fed and how much)
If you put your numbers in this format with the data you have, people will be able to see patterns and be able to advise you on dosage. When Elvis starts reacting to the insulin with lower numbers, and when you have changed food, there can be times when he is much lower than you would expect.
