It is time-consuming, and you are completely entitled to give it up, as it is hard. However, these are things I did, if you are looking to stick with it.
I expressed for 14 months, as baby refused the breast. Baby was born prematurely, and I guess I wanted to make sure that although my body had failed them dreadfully before, I would at least try to do this for them, to help strengthening their immune response, etc. Baby was 7 months exclusively fed with my milk and then combination-fed until turning one year old corrected.
You want to go hard in the beginning to build up supply. If you want to sustain baby's complete diet, as it will be a few months down the road, you need to get to a production of around 900ml per day. I was ill advised and did not build up sufficiently in the beginning, and always produced around 800ml, so at some point baby's appetite started to outpace me, and I started supplementing with formula. I pumped 7/8 times a day in the very beginning. The moment you have established production, things get easier. You can drop the 3AM session, and easily go down to maybe 6 sessions a day, 15 mins each. Double-pumping is key, and hospital-grade stuff, too. So it is great, you have all that already. (However, not all brands are created equal. I got only 70% of my Medela output using Ardo, while having the same regime. See which one works for you.)
I would feed baby the bottled milk, then pump as soon as they were asleep again. I did a couple of extra pumps (often shorter ones) in the evening (when DP could help out, after work), to mimic cluster feeding to build up supply. I had one 6 hr sleeping break a night (3AM-9AM) where DP was on baby duty (he slept 9PM-3AM). I then used to have a 30-40 min pump (would be engorged), while he took care of baby and breakfast before work. This would provide the surplus milk for DPs night shift. I was able to do all this, because DP was hugely supportive of me giving breastmilk. Without him, things would have been much, much more difficult. I also had the massive advantage of no other children to look after, as baby was my first.
Perhaps purchase additional pumping sets so you don't have to sanitise in between, but can do it once a day in one burst (DP's job). I had 16 individual ones, so 8 sets. The expense was well worth the time-saving.
I also moved to a moveable pump, buying a bra that held it securely into place, so I could pump during cooking, when a passenger in the car, etc. I even pumped once in a restaurant like this (under a thick jumper). Whenever DP would drive somewhere, I would get in a pump. Going mobile was an utter game changer, as I hated being mid-pump and having to detach because of baby waking up crying, etc.
I became shameless about pumping in public. I pumped in front of my dad, brother, male friends, FIL, BIL, everyone. I pumped at the dining table during family dinners, movie nights and shared car journeys. I had previously been prudish, but parked that insecurity at the door. Having the tight pumping bra helped, as it obscured quite a bit, I also wore male botton-up shirts for that year, which hid stuff well. The fact my family supported this was so helpful. And I am very grateful to them for normalising it. Everyone was Team Baby, and we all tried to get baby bigger and stronger.
It was a tough time, but I feel happy that I stuck it out. I counted down the months. First trying to get to three, then to six, and eventually to a full year corrected, when we introduced cow's milk.