Shall I treat project estimations as urgent as calls or chats on new projects? I take later as urgent unplanned events and talk to clients today or tomorrow. I never let them wait longer.
However, estimations take time. It can take the full day of my time to properly research and make an estimation on complex projects. All other tasks are waiting while I make estimation.
I am not sure if this is a proper approach as approx 50% of estimation are never realized.