Try giving probiotics which will improve her gut health. Can try buying Biogaia. Newborns are not able to self soothe to sleep now. You can try switching on white noise, keep the room cool etc. Awake times are important too. Babies can’t sleep if they are under or over tired. You can also consider babywearing her using a baby carrier to put her close to you for comfort. It should help her sleep.
Is it reflux problem, normally baby cry after feed? If it is normally baby prop upright they feel better once you put them down they start crying. See a pd to comfirm will be better and dr might give medication to help baby. Dont stress, jiayo. Baby will feel better soon
Kayla so far baby bettee
Jas