breast massage and hand expressing

would like to check if we should pull and squeeze the nipples during breast massage / to hand express effectively? I've read articles to say it should be gentle pulling but LC in hospital also just squeeze nipples for milk to come out prior to feed and masseuse also does that to release milk I'm a bit confused cos what LC and masseuse did is painful but it really help to release milk and even to the extend of squirting. context: I do have over supply, and usually have engorgement issues. I haven't been very successful at hand expressing as I feel pain to do that on myself and milk only comes out in drops. so am pumping most of the time and latch sometimes.