$260k in HYSA — Should I DIY investing or hire a financial advisor?

I’m looking for some guidance on how to optimize my investing strategy going forward.

Current situation:

• $260k sitting in a HYSA (yes, I know this is too much cash)
• ~$150k in Fidelity (mix of brokerage, Roth IRA, SEP-IRA, and 403b — mostly mutual funds/ETFs)
• ~$50k in Robinhood in individual stocks

Background:

• Physician, recently finished residency
• No debt
• Income:
  • Next 3 years: ~$180k–200k
  • After that: ~$350k–450k
• Married, no kids yet
• Fairly frugal lifestyle — main spending is travel and occasional dining out

What I’m trying to figure out:

• How much of this cash should I be deploying (and how quickly)
• If sticking with a simple index fund strategy is sufficient for my income/net worth
• At what point, if any, does it make sense to hire a financial advisor

I’ve done some basic investing so far, but I want to make sure I’m not being inefficient or missing anything as my income ramps up.

Appreciate any advice, especially from others in a similar situation.