Welcome to FDMB
You are not alone! we have all been in your shoes, cried till there were no tears, felt inadequate, guilty, did I missed any feelings? probably, but we are here for you. thank you for the spreadsheet, looking at it I see a great improvement! that is great.
Diabetic cats need to have a diet of wet can or raw foods between 0-10% carbs, most members fed Fancy Feast of Friskies Pates 0-10% arbs most feed up to 5%, they need to have a schedule, no grazing no dry foods, these contain between 20-30% carbs, cats cannot digest carbs, as well as 3-4 small meals or snack during the day to keep the Lantus Depot in check, also you are home testing with the Libre, this is great, you do not need to input all the BG numbers but perhaps the one before shots and 3-4 times during the day, is your choice, his numbers are beginning to be in the low blues, do you have a manual monitor and strips, most members use the ReliOn human monitor and strips (Walmart) it will be necessary when you begin to see 2 digit numbers (green) the Libre tends to read the low (2 digit) number lower than reality, so your alarm may go off unnecessary, if you get a number lower than 90 please re-test manually,
below is a Drs approved food list the third column contains the carb% for each food, please make the transition from the dry to wet slowly to avoid stomach upset or a dive in glucose levels, you need to create HYPO KIT, this contains some medium carb foods 11-15% , some high carb foods 16-24% carbs Karo syrup or Honey, these two last ones are a quick fix, so we like to hike up the BG to safe numbers with food rather than the karo or syrup.
0-10% low carbs / 11-15% medium carbs / 16-24% high carbs, I will tag a member that can assist you with Lantus and dosing, as well as kidney concerns you have, she is very knowledgeable, in cats illnesses, We are here for you, keep posting , keep asking
@Christie & Maverick
@squeem3
https://catinfo.org/docs/CatFoodProteinFatCarbPhosphorusChart.pdf