What’s there to feel selfish about? Don’t feel selfish or guilty of anything! You said it yourself you don’t know why you’re feeling that, so leave it at that, & you know ur not doing anything wrong…I wish I started combo feeding sooner (for my sanity)! I had a very difficult bf journey. It’s not one size fits all for mom or baby. I was formula fed (my mother never bf), but I was also not loved properly by my parents throughout childhood/life, so i think deep down I was trying to be the opposite of my mother as a trauma response. I didn’t fully realize that until after i weaned at 18m. Whatever your reasoning, do what’s best for yourself as well. (Be mentally prepared for your supply to dip some if you’re bf or pumping a little less over time)
Watch this, it might help: https://www.instagram.com/reel/DBJW1E2oe7T/?igsh=OHd5M2FvYjNoYmM2