BF baby taking a bottle?

So this is my second kiddo. Both pretty much EBF. With my first i started him taking a little pumped milk from dad about 3 weeks old, nearly every night. We never had an issue with preference for bottle over breast or vice versa. With my daughter now, i started her on pumped milk once a day about 2 weeks (tongue tie- so she wasn’t very efficient and i needed a break). She did just fine for a while with the same nipples my son used (medela bottle ones i pump into). She is now 12 weeks and for about the last month she has almost completely rejected the bottle. Sometimes she gulps a few times then starts crying and refuses it, other times she just wont take it at all. At first i thought she wasn’t hungry but now i am feeling like she just has a strong preference for the breast. I go back to work Monday and this will be an issue if she doesn’t take it for dad. I have slow flow, size 1 and 2, none seem to work. Any advice?! Not sure if maybe milk is too fast or maybe too slow for her (i have strong let down). I do the propped up horizontal feedings also. Thanks!