OP it is hard but there are definitely things you can do to make it easier. I found overtiredness was the one thing that made my babies scream as if they were being tortured and would do anything to avoid it!
There is no need to follow absolutely every 'guideline' in the book - that way madness lies. You have to work out what you will be happy to do but if it helps, this is what worked for me:
-I did BF but I gave a mine bottle of formula at 5, did bath, then breastfeed,. Then they would settle, whereas otherwise they would just want to cluster feed, because my milk supply was always low in the evenings. I hated cluster feeding so much that I would have ditched BF completely within the month had I had to spend every night on the sofa with a baby latched on. Doing mixed feeding, I went on to BF all three for the time I had planned to and genuinely enjoyed it.
-All three of mine were upstairs in the cot with the monitor on by 4 months. Sleeping in their own rooms overnight too. The SIDS guidance is just that - guidance - I took the approach that if every other precaution was taken (no cosleeping, no smokers in the house, back to sleep, safe sleeping bag and no pillows, room at right temperature etc etc etc) then I was happy with the tiny amount of risk of them being in a room alone. Again, you have to be happy with what you're doing, but this worked for us.
-I worked towards mine self-settling around the 3-4 month stage using a lullaby light/white noise thing. Didn't happen overnight of course but it worked and by 4/5 months I could put baby in the cot and they could settle themselves.
You have to do what's right for you but guidelines are just guidelines. You will find an approach that works for you all.