Mine is much older, and I still find it tough, so yes, I’m sure there are.
Keeping busy is one thing, but also getting support with it. There is an organisation called Mothers Apart From Their Children (Match). If you google it you can find a helpline number. They exist to support particularly mothers in shared parenting arrangements and all those mums who are separated from their kids for whatever reason.
I feel for you. Well done for posting.
jj