Sleeping pattern-2 months baby. Age?

Hai doctors My daughter is 2m10days old.weight is 4.6kg and birthweight is 2.58kg is on breast feed.From the past 3-4 days,she is sleeping 2-4hours as a stretch at nights.(sometimes little more also)she is not taking feeds properly in nights..very sleepy.(approx 2-4 times pees from 11pm to 9am) Started sucking her hands in day timesand her lips becoming dry(not that much extremely) Many times keeping her tongue out and making her mouth like sucking. Day time sleeping patterns changed and sleeping only 30mins to 1.5hour at a stretch.after wake up she is active in cycling..wake up timing approx.30mins to 1.5hrs.. Is there any concern about night feedings and little dryness of lips? This much routine changes in this younger age? Thanks in advance.