[giantrobot]

> I am now working a full 40 and there's no way I could cut 40% of my hours without a massive drop in output.

I expect the following has at least in part occurred:

1. Your participation in "meetings" has increased significantly. Management tends to conveniently forget that interruptions have follow-on disruptions on focus. This is compounded by the Doorway Effect [0].

2. You don't trust your direct reports to handle the level of autonomy you had as an IC. You're being pushed by your management to provide status updates so you have to scurry around poking ICs.

3. You're still expected to have at least a portion of your IC output in addition to your management duties.

4. You've discovered the productivity of your team is a bell curve. Some can get work done quickly while others are much slower. This may be related to their skill/experience or their particular tasks.

5. You're pressured by management to split up work to deliver a baby in a month. This causes you to take on even more IC work to try to accede to such stupid expectations.

[0] https://en.m.wikipedia.org/wiki/The_Doorway_Effect