Working Slower And Better

Won't my productivity fall if I slow down?

Your productivity will improve if you slow down. Because the quality of what you are doing will go way up. And it is much better to do things well, then in a half-baked way. It's much better to do one thing well, than six things in a half-baked way. If you want to do things half-baked sure, multitask, rush around. You're not going to be very useful to yourself or anyone else.