Have you looked at some of our spreadsheets? look at mine (Sammy's). I was just as frustrated and discouraged as you might be feeling now. It takes as long as it takes. We call it strapping our our patience pants. Hang in here... after 142 days, Sammy went Off the Juice. Time well spent. She is a healthy cat now, who tested at 77 yesterday.
When you look at my spreadsheet, click on the second tab at the top.. it will give you the US equivalents, which will make more sense to you. It was a rough ride for a while there, but we got there. You can hopefully do it too, or at least get your kitty into a more regulated condition. It really is worth it.