I found books were helpful
can’t totally recommend my personal favourite if your child is a sensitive seven
but there are lots out there that will be appropriate age levels and the act of reading together in a quiet moment can be a healing and comforting thing
just be sure to read the books yourself first, both to check appropriateness and to also get the first wave of tears over with
have hankies for in preparation (& a glass of water) when with your DC it’s really good to show it’s ok to feel sad and cry and yet also carry on and have fun too
multitudes of children’s films deal with emotional turmoil, loss and death and moving on with help from family and friends - probably your child has seen many of them already but not been focused on the loss parts so much
revisiting them as a starting point might be useful with the coming changes
and then using books to help talk about feelings as the journey progresses
as PP mentioned, you will also be feeling emotional and have a lot of practical demands - quiet bedtime reading unites spending quality time together and processing of feelings for both of you and will help combat feelings of isolation or anxieties about losing you too
you are all experiencing this as a family, helping each other through it as a family is important
💐