The Oil mode also tracks oil dilution due to blow by from the engine running but the oil not reaching normal temperature. I just had form for the first time on my 2021 Hybrid. The tank had been filled about a month ago so I figured it must have been oil related. So I put the fam in the van, loaded up on snacks and went for a 30 minute drive. That fixed it.There is a very detailed discussion of it here: Oil refresh mode - analysis and solutions
TL;DR: If adding fuel doesn't help, drive for 10 min to warm up the engine and drain the battery a bit, then idle in your driveway for another 5-15 min, which will let the oil heat up past 100 degrees Celsius. That should exit the mode. There are two things that can trigger FORM, stale gas, or the computer believing that there might be condensation in the oil (which it then wants to boil off). Just driving doesn't usually allow the oil to get hot enough because of the air passing through the radiator, so the idling is key.