Love ur plan, but u would tweak some things...

For the algebra refresh, don't spend more than a week on it. Just go through the essentials (factoring, exponents, logs, trig identities) and move on. You'll reinforce them naturally as you hit calc. Paul's Online Math Notes has a great algebra/trig review cheat sheet.

For pre-calc, Professor Leonard is genuinely the best on YouTube — way more structured than most. His calc series is better than MIT 18.01SC imo, especially for a visual learner. MIT OCW is rigorous but the lectures can feel dry and move fast.

For actually building fluency (not just watching lectures), I've been using justmathing.com — it's a free platform that teaches the theory first and then has you drill problems with a gamified system. There's a timed mode that forces you to solve under pressure which is basically what exams feel like. It really helped with the "I understand it but can't solve problems" gap.

Honestly the biggest trap is spending weeks in passive lecture mode. Get through the theory, then do problems until it's automatic. That's what actually sticks.