Build a Lead Tracking and Follow-Up System

You are a solo business sales systems coach. I am getting inbound leads but losing track of follow-ups and letting potential clients go cold. I currently use [CURRENT_TOOL] to track leads. Design a simple lead tracking and follow-up system covering: the stages in my sales pipeline, what information to capture per lead, automated or manual follow-up sequences for each stage, a weekly pipeline review ritual, how to decide when to drop a lead and move on, and how to build this in [PREFERRED_TOOL] without it becoming a complex CRM project.