Transition to one nap already??

It’s that time again where my LO is fighting naps, but this time it’s basically just the second nap. Does this mean I should transition to one nap? I know it’s early. I don’t know if it’s due to a regression so I don’t want to be premature about it but it’s been a struggle. Due to her not doing the second nap she’ll be awake for 7-8 hours before bed 😱 I know it messes up her night too. Anyone else jump to one nap because of how baby was acting? Or just decide to transition to one? What do your day schedules look like? Thanks!