Lump,
What LC taught me last time was to pinch nipple in a U and C first to open up the ducts, followed by aerola and whole breast.
Then take a panadol, ask hubby hold breast shield real tight for u, turn on pump to suck hard and press the hell towards center of breast on the lump. If u no strength, ask hubby press lump and u hold breast shield. Must instruct him to ignore your cries of shiny cuz IT WILL BE PAINFUL LIKE HELL.
What Mdm Rokiah taught me (which is good If lump not so bad), is put HOT tower on lump wait for awhile massage, put Hot towel again, massage then hand express and push/press the lump out then the pump the hell out of the breasts.
Both cases Keep latching baby on the affected side till its gone. What I do is 1hr before baby's feeding time, empty out both sides then get baby latch on affected side for 30min to help 吸通 the duct. Never mind if no milk. You get to stimulate milk production and clear blockage at same time. If baby still want milk, feed him the expressed milk. Also eliminates nipple confusion this way else if baby drink too often from bottle they'll forget how to latch.