Recent lurker looking for a healthy discussion.

Looking to engage in a discussion and tap into your knowledge. Here's a snapshot of my financial situation: I enjoy a stable passive income of $6500 monthly, my mortgage-free house is valued around $700k, I have approximately $300k in liquid funds, and another $100k in TSP L 2040. Currently, I'm contributing $17k (including a 5% match) to the L2040 while still employed.

Seeking advice on optimizing my TSP gains. Despite a lifetime focus on savings and debt-free living, I'm now inspired by this community to become more proactive with TSP and aim for the one million retirement club. I'm in my mid-40s. Any suggestions for or different approaches?