plugged milk duct questions

Desiree
I'm a first time mom so bare with me! 
I've been ebf for 3 days, today will be day #4. Yesterday was our first day home and we had a stretch of about 5 hours where he just wasn't interested in eating. Since then we have been feeding every 2-3 hours
I'm noticing a few small lumps around my breasts. They were larger last night so I looked into it and realized my milk ducts must be blocked and started massaging the spots and using warm compresses to try to fix them
Does anyone have other recommendations? I'm so nervous that this will get worse. They don't hurt just a little when I'm massaging. Is this something I just continuously massage/use warm heat and they will eventually disappear?