I just purchase

I just purchased the S20. The more affordable option. My previous breast pump wouldn’t suction to me properly on one pump and it’s decreased the amount I get. I’m 4 weeks PP on Thursday and I use to EBF but have now transitioned to bottle feeding supplementing with formula and giving whatever breastmilk I get. My first pump of the day which is normally 2 to 3 ounces and then after I get around one to one and a half ounces, my baby has been eating 2 to 3 ounces of breastmilk and formula, so I’m afraid I’m undersupplying. What are some tips I can use to increase my supply to make sure that at some point in the future, I am able to either exclusively breast-feed or pump enough to feed through a bottle while we’re out in public.

Honestly a wearable pump cannot fully empty you - you need a wall pump to fully empty at least once per day. Then you can use the wearable for the other pumps. Also I suggest nursing first feed of the day and then pumping right after to empty daily with a wall pump (5-10min)