Six Month Interview Prep Guidance USA

Currently working at big tech/maang with 2 yoe. Trying to leave my current company. I have done around 250 lc back when I was interviewing for internships couple years back and then was busy with work

Currently working at big tech/maang with 2 yoe. Trying to leave my current company. I have done around 250 lc back when I was interviewing for internships couple years back and then was busy with work so didn't have time to do any lc problems. Planning to prepare for next 6 months, and was wondering what would be the best way to prepare during this time. Planning to spend 2-3 hours every day during week days, and 10-20 hours during weekends. I started with neetcode ds course to refresh my memories and for system design started with Alex xu system design book. Planning to do neetcode 250 once I finish the courses and then am planning to do at least 500 - 600 lc. For system design also planning to use hello interview Will also do mocks few months from now. Anything else I should be doing? Is this a good plan?