What saved me was DH taking DS for a bit in the morning. obviously depends when he has to leave for work, but DH would get up 6.30, take DS downstairs and bring him back to me at 8.30. In that time he would nappy change DS, shower, get breakfast, get dressed, and take DS and the dog out to the park for twenty minutes, rain or shine. Then DS would come back to me and have a feed and I would get up (or fall back to sleep with DS). Often the fresh air would mean he would have a nap at 8.30 (he'd fall asleep in my arms after a feed in bed, I'd just leave him there) which would allow me to get breakfast and shower. Whilst DH had DS, I would have earplugs firmly in, door shut and DH would not come and get me for anything unless something life threatening happened.
This system meant I always had 2 hours sleep before getting up, and always had a shower. DS also liked be in the boucy chair or on a big cushion on the bathroom floor whilst I showered. Get DH to make your lunch the evening before and put it in the fridge for you.
DS fed 2-2.5 hourly until he was about six months I think, but a slight attitude adjustment does help with this. Instead of thinking about giving baby a feed to be a "big thing", it helps to think of it as a "small thing". You don't plan your day around how often you'll need a glass of water or need to blow your nose, you just do these things as they come up. Get on with your day, do what you had planned (pop to shop, meet friends etc) and breastfeed as the need arises, rather than think "oh G-d, I can't go out now cos she fed an hour ago so she'll need feeding as soon as I get there and I won't know where to sit" or "I can't start the hoovering cos she'll need feeding in ten minutes" etc etc. It really helps to think of breastfeeding as something you'll just do when you have to rather than something that needs planning and other stuff structured around it.
Lastly (sorry for essay) it really really helps if almost every day you shower, sort your hair out, put some half decent clothes on and leave the house and see people. Just make it happen, even if DD cries whilst you are getting ready, if she can see you and you are chatting/singing to her whilst you do it she'll be fine. I hope you have plenty of friends and family to see but if not then just go to Costa, or to a playgroup at your SureStart Centre, or RhymeTime, and just be out and about looking halfway decent. It will do absolute wondes for your self esteem, you will feel endless amounts of achievement, you'll feel much better for being out of those four walls. One of the joys of early maternity leave for me was lingering in a coffee shop with some NCT friends, eating cake and talking about how hard it all was! (Now its chasing them round in grim softplays, I didn't know how good I had it!)