Subject: Have about 2.5 years of cash left for expenses
I'm retired, 58, living off a portfolio of Berkshire and cash.

I've let my cash bucket that I use for living expenses dwindle down to about 2.5 years worth, and I'm trying to decide when I should sell some Berkshire to refill the bucket.

I'm generally pretty bad at selling Berkshire in big chunks (poor timing,regret), and wondering if maybe a monthly/quarterly selling system might be better? That way I could leave the cash bucket smaller and take advantage of better Berkshire returns.

Has anyone experimented with something like this? Is it crazy to have such a small cash cushion?