Baby sleep help 😩

I have a two month old and a two year old. Every night around 11 pm she gets up usually for a bottle and a diaper change. Then I have a really hard time getting her back to sleep. She does good all day and all night once she falls alseep. But shell just cry and cry then fall asleep and wake back up and cry. Idk what to do for her I tried helping her with her legs pushing them up and down, tried a windi thinking it was gas but nothing... shell sleep in the momma roo and propped up a little in a boppy pillow during the day for her naps. At night shes beside me in a rock and play bassinet. ( she is swaddled at night) so tonight I tried to hold her and rock her and pat her bum with a white noise. That didnt help. So I laid her on a pillow and now shes out! What do I doooo?? Do i lay her on a pillow every night but I know that can be dangerous when I fall asleep. Please help me mommas what did you do?!? TIA!!