Multiple "top priorities" is the same as having none. One clear priority forces you to actually finish something instead of spreading effort thin across five half-done tasks.
Re-run the tool with your new energy level and reorder your remaining tasks. It's normal for energy to shift after lunch or after a draining meeting.
No — keep engagement time focused on replying and interacting on your own posts and your niche. Passive scrolling belongs in personal time, not your work block.