Although they can lap, they may not lap as much as they need each time they have a feed.
babies will often lap little bits at an early age, but not the amount they would if they just had to swallow / suckle. (swallowing is easier so they'll generally take in more & suckling is comforting) I would syringe / bottle feed them every few hours but leave the milk there also for them to lap. (try & get them to lap some
before you feed them)
Otherwise they'll be full & won't want / need to lap & the idea is to encourage them to learn to lap as much a possible.
Hope that makes sense.