With my son you kinda have to force them to sleep like play play until they are tired and my son sleeps with me in bed and I lay with him he falls asleep and yeah try giving big meals

For my kids, I always did they're routine naps during the day. About 2-3 for your 7mo.. play during the times they're awake until they get tired. Put them down. Closer to the night, play, big meal, nice long bath with warm water. As long as you can. If you want, take a bath with her and play a game or something to get her extra tired. Get dressed fairly warm with cool air or cool dress with warm air. Favorite blanket(s) and a bottle or breast milk. Whichever you do... hopefully that should work. It worked for both of mine. Even when we have all been sick. But that was kinda trickier.