A week is a long time for feedback loop, especially for juniors (assuming the two lagging are juniors). Scrum's daily standup meeting is a nice way to shorten t

A week is a long time for feedback loop, especially for juniors (assuming the two lagging are juniors). Scrum's daily standup meeting is a nice way to shorten the feedback loop and eliminate blockers. A similar meeting in your schedule, even if you don't implement Scrum, might be helpful. You may try pair programming. Might decrease productivity but increase quality. Or you can find another way of getting help from the two good guys like you on keeping an eye on them. Whatever you do, a team of five is quite small. Just keep close to your team, move to a single room together, share a long desk with them etc. You may also want to divide work into smaller chunks so you can keep a better and timely track.