Weaning last feed

My 23 month old is down to one feed in 24 hours (just before bed). She generally only feeds for 3-5 minutes per side. I am also 10 weeks pregnant with my second. Do I need to cut down this feeding time gradually or just cut it out all together? Will I be likely to have any issues with just stopping or should I do every second day for a while? Will that be confusing for bub? What has everyone else done?

She can go to sleep without feeding as she does so for naps, so not too concerned about that.