exclusive vs. non exclusive breast feeding

reem

my 50 days old daughter is going through a growth spurt and it's been since thursday.. a bit fuss,sleeps for 1 hr and wakes up extremely hungry...

i am exclusively breastfeeding however my milk is sometimes became light (not fatty) and my nipples are soare and i'm in pain.. plus shes spending 50 minutes nursing and not getting full..

plus i am a working morher and our maternity permits are only 70 days.. so i barely have 20 days now.. im pumping of course and bottle-trainig her although she can't bare the idea of me giving her a bottle.."why bottle when u can give me nipple"🤣 oh yeah.. u can read her eyes..

is it okay to give her just 1 formula meal? to help myself rest and her get full

though it is the hardest thing, watching your child eating a meal u did not produce🙄..

will this be a wrong step??

is it okay?

can i mix breast feeding 80%/ formula 20% ??

any idea of pros and cons??