When I did the switchover from Lantus (and Humalog), my initial basals were slightly lower than my total Lantus dose. I think the aim was to avoid lows from too much basal -- a mathematical equivalent with Lantus would have meant more insulin, since continuous infusion obviates any trailing off of Lantus. Most of those initially lower basals end up a bit higher. (My trainer also talked with my CDE beforehand and they figured out all the numbers. I'm not sure if that's standard procedure for Omnipod trainers, though.)
My trainer got in touch with me beforehand and advised what to do about Lantus before the training. If you can't contact your trainer, here's what I did. I was taking my Lantus twice a day, and my training was in the morning, so I took half my bedtime dose the night before, and none the morning of. The normal fast-acting with breakfast. If your start-up coincides with having a significant amount of Lantus on board, start your pump basals anyway, but consider a reduced temporary basal for the duration of your injected Lantus.
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