Algaecides are preventative, not curative. So you would only be dumping more $$ for no benefit.
More frequent dosing will kill more often, shortening the duration. But understandable that life gets in the way.
Once you kill and turn the corner, your filter will do the rest of the cleanup. There's no requirement to vacuum to waste to complete a SLAM, so don't let that discourage you.
If you see dead algae cells, that calls for SLAM even if CC is borderline.
Keep on it - it works, it just takes time. While you're home for weekend, try to test and dose every 2 hours even into the night. That'll help immensely.