I wouldn't say it's tips as what I'm doing is fairly generic per the advice.
I have a shower, massage boobs a bit in the shower.
Get out the shower, get comfy, and carry on with the massage, generally cup boob with one hand, and massage with other, I apply a fair bit of pressure but but not enough to be uncomfortable. I set a timer for 7 mins.
After 7 mins, I do the c shape around the nipple, gently squeeze for 3-4 seconds and release.
Where i went wrong first couple of times I think is moving my fingers to press on a different part of my nipple when I didn't yield results quickly. I got my best results when I just repeated the nipple squeeze in the same 2-3 places persistentlyvrather than continously moving my fingers around. If I moved around I just tended to get the odd gloopy (sorry) drop that stuck to side of container, but if I persisted with one squeeze and release pattern repeatedly eventually it would flow more and drip into container.
I do the nipple squeezing for about 5-7 minutes. I don't squeeze hard enough that it hurts, though i do occasionally catch my nipple on the container.
I have been advised to do it from 36+2 due to gestational diabetes.
I didn't apply much pressure to myself, said if it doesn't work I'm not gonna go crazy and try multiple times a day, I'd give up. But fortunately it seemed to come quite easy and I got good results on second go so will keep going.