A toddler plus a first-grader equals a full-time job watching them. If you're splitting child care with your wife, I think it would be a reasonable expectation

A toddler plus a first-grader equals a full-time job watching them. If you're splitting child care with your wife, I think it would be a reasonable expectation for your output to be about 50% what it usually is. It depends on your situation, but it doesn't mean you should give up your position as team lead, necessarily. It could be hard for someone else to get up to speed on how to handle your responsibilities; everyone's at least remote and other people probably have distractions too. See if you can delegate half of your work to other people, or push back on schedules, and keep the highest-impact leadership work on your plate.