Allowing my milk to dry up

My son just turned a year old on January 25th and after a year of exclusively pumping i was ready to be done ! I got the ok from his doctor to introduce whole milk gradually mixing with breast milk . So at that point I backed off my pumping down to two sessions a day then one session a day etc after about two weeks only pumping once a day I was only getting about 4 oz combined ☺️ I’m at 7 days no pumping haven’t felt engorged or full at all but today I have an area that feels slightly lumpy I’m wondering if I should try to pump it out or is this part of the drying up process ? I’m worried if I pump it out my body will kick back into gear producing milk 😩 also worried about mastitis if I end up getting that I would have to go right back to pumping 🤷🏼‍♀️