on the back burner
(idiomatic) Not immediate; inactive; receiving or requiring less than full or regular attention.
That project is on the back burner until we deal with higher priorities.
The morning after my high-school graduation found me up early job hunting. The dream of college I put on the back burner. Martha Reeves
My stand-up has a lot of performance in it, and I loved doing it so much that, after years, I put the idea of having a show on the back burner. Cristela Alonzo
When you have kids, there's a tendency to put the marriage stew on the back burner and give it a quick stir now and then. But it's important to remember why you had children with this person. Allison Pearson
With 'Suite Life,' I had three years to sit a little bit on the back burner and learn with less pressure. Debby Ryan