I agree that any supplementing can and will affect your supply. Both my kids at first nursed all the time. My second seemed to live on the boob for a while. He really had a strong sensation to suckle and I let him. Even after he got past the first few weeks and we offered him a paci he would never take it...still won't...lol. Giving a bottle so early could cause nipple confusion which might be why your little one seems kinda lazy at time eating. She has realized there is a faster way to get to the food!! LOL. I would lay off any supplementing for a few days and nurse nurse nurse, milk is supply and demand and if you are supplementing any it will affect the demand. Go to bed with your baby and just let her nure and don't wantc the clock at all.
Congrats on your new little one and welcome to the board