Client work or your own product: how do you split your week?

I have done client work for years, and it pays the bills. My own product keeps losing the fight for time, because a client deadline always feels more urgent than something only I care about.

Things I have heard or tried: fixed days for each, a protected block every morning before client messages, or taking fewer clients on purpose. Each one breaks at some point, usually in a busy month.

If you run both, what split actually survived a few months for you? And did you ever drop one of them completely?