Pumping not working.. Thinking of quitting 😩

So my baby is now 4 months old and hasn’t exclusively breastfed for almost 2 months now 😭 I was trying to get her back to breast but she just kept screaming and arching away (would only suckle when she was in bed with me and tired) so I just stopped trying to force her. I then pumped when ever I could and was getting 4-5 oz a session, but it was too hard to keep up with as my baby became more and more needy. I now have wasted money on a spectra 2 pump and only get to pump 2 times a day and only get maybe 2 oz max, it also takes me almost an hour to get that as my letdowns take forever to come and when they do it sprays for a minute and stops when it was fast and furious before 😔 I just think I should quit and not have the stress of only giving her 1-2 oz as it’s nothing to her now. (She drinks 4-6oz a feeding). Also I will sit there and be pumping and nothing is coming out but then I hand express and it sprays like wth? Very discouraged and want to quit