Considering switching from t:slim to Mobi — just discovered the extended bolus/carb entry issue
I’m a longtime t:slim user and I’m strongly considering switching to the Mobi. In doing my research, I just discovered something that’s giving me pause: apparently on the Mobi, you can’t simply enter a bolus in units and then choose to extend part of it. You have to enter carbs to get into the extended bolus workflow.
This is pretty annoying for me because after years of pumping, I often already know exactly how many units I want for a particular meal. I don’t necessarily want to go back and forth adjusting a carb number just to make the calculator arrive at a dose I already know.
It gets even more awkward because I don’t dose based strictly on carbohydrates. I also account for protein, particularly with higher-protein meals.
Depending on the protein source and other factors, up to roughly 58% of protein can eventually contribute to glucose, generally over a longer time horizon than carbs. A lot of the time, the protein component is specifically what I’m trying to cover with the extended portion of my bolus.
One workaround I’m considering is basically creating a fake/simple carb ratio just to make the Mobi interface easier to use — something like 1 unit = 10g of “carbs.” So if I know I want 7.5 units total, I’d enter 75g and then, for example, deliver 5 units now and extend the remaining 2.5 units.
Obviously the downside is that my logged carbohydrate data would become garbage because those numbers wouldn’t represent my actual carb intake. They’d basically just be a shorthand for the insulin dose I want.
For those of you who moved from t:slim to Mobi and use extended boluses regularly: What are you actually doing in practice?
Are you entering placeholder/fake carbs? Have you come up with a simple ratio like this? Are you manually splitting boluses instead? Or is there some other workflow that makes this less annoying?
I’d especially like to hear from people who dose for protein/fat or who already know their meal doses in units rather than calculating everything from carb counts every time.
If anyone from Tandem reads this sub Reddit, this would definitely be a feature. I would vote to fix in your workflow for advanced users that count more than just carbohydrates and frequently use extended boluses, particularly for people that have highly repetitive meals and they know the exact amount of insulin for that repetitive meal.