Sleep sack

Shane

Worth it to get one or no?

She's 3&1/2 months old

Goes to sleep at 7:30p has a bottle at 330a and then goes back to sleep another 2-3 hrs. Throughout the night she will fuss so I have to keep reaching over and giving the pacifier

Is it worth it to try a sleep sack or just leave things be? If so which one? Thanks!