re: What’s a great net worth by 45?

I am 54 and wife is 51 we are at 2m net worth now and honestly it never feels like it will be enough. My plan is to get out at 60.

I have 2 rental units that will be paid at 60 and they will bring in an additional 2400 per month. We have almost zero debt (1 rental and primary but both should be done in the next 6 years)

So overall
7500 per month to live
2400 in rentals
The rest on what should be about 1.85m in 401ks and 2 years which of expenses parked in cash.