How often should I be washing my makeup brushes?

I actually clean my brushes with Johnson & Johnson gentle baby shampoo! 😜 doesn’t have a perfume scent and is super gentle on the brush bristles
Also I heard that it's really good to spray rubbing alcohol after washing them! (But from super far distance) It helped my friend's acne!
I like to use Dr. Bronners liquid soap. It does a good job of removing any residue left on my brushes and rinses clean!
Also, what cleanser are you using?
Please tell me I'm not alone! πŸ™ˆ
I'd say I go through phases where I wash my brushes every week, then I just forget and maybe wash them once a month.
I know I don't clean my brushes as often as I should...
How often is everyone washing their makeup brushes?