I wouldn’t withdraw it with 60. Better to keep it invested without taxes as long as possible. If you stop working at 50, I would invest it with ValuePension or Viac. Even if it’s not part of your available assets for another 20 years, it’s still there. 2 million in IBKR and 1 million in 2nd/3rd pillar still gives you a “SWR” of 120k/year, even if you just use IBKR at the beginning.
That’s my plan anyway. Withdraw 3a with 61/62/63/64/65 and 2nd pillar with 69/70. Most people on Bogleheads postpone SS (AHV) till 70 to get more. It’s a plan B if you live way longer than expected, to make sure your portfolio lasts even 50 years. But I’ll decide that once I’m >60.