Your post could have been written by me 2.5 years ago after I had DD. I too had EMCS due to DD's heart rate dropping, could not get out of bed to get her at hospital and midwives too busy to help. Got home, would she sleep in her cot nooo. Getting on and off bed agony, couldn't walk around too much to settle her and was so tired I was hallucinating at points. Day 5 hormonal wreck, in tears, milk came in.
It gets better really it does. I managed to breastfeed to 23 months and DD is now a thriving 2.5 year old.
Things that helped me:
DH got up to get DD in night and brought her to me.
I wore a t-shirt all day and put over cot mattress under DD, the smell of me helped her sleep better.
Milk came in so she got more and fed less frequently.
Slept in the day whenever she did and sometimes DH took her out for short walks in the sling to settle her.
I ate more often but in smaller amounts to keep my blood sugars up.
Rugby ball hold on side she didn't feed as well on.
Call the National Breastfeeding Helpline on 0300 100 0212, they have local volunteers who are mums that you can speak to for advice on latch etc.. and are open till 9.30pm.
If your let-down is quite forceful then DS may pull off at first as pressure of milk into his mouth quite strong. You could try hand-expressing a small amount to relieve the pressure then try latching him on, video .
This device also apparently good for helping babies sleep in moses basket, am even tempted to buy one myself for when DD2 arrives.
Lastly do not feel like a failure if breastfeeding becomes too difficult for you to maintain, your baby needs a happy, healthy mum more than breastmilk to thrive.