Massage, heat, soak in the tub with Epsom salts, pump pump pump. Get baby to help, get partner to help. Mine turned into mastitis everytime until I finally quit.
I’ve gotten many clogs, mostly from being lazy and skipping a feeding or pump sessions. Massage in a warm steamy shower, pump a lot, get baby to help. I’ve heard partners can do it too but I’ve never had to resort to that. All of mine have come out with a mixture of those things before it ever got to mastitis.
I’ve had clogged ducts many times and with massage +/- heat when they’re bad they always go away on their own