Hi PeskyPiskie:
Like many have said - don't be too hard on yourself and pat yourself on the back that you've rejigged your schedule to help support your DS.
Like DameKewCumber suggested - try to just consistently be reading with your DS. I'm not clear where you're at - it may be he has all the phonic sounds, but still struggles to blend them all together when sounding out words more than one syllable. This stage was a real stumbling block for both my DDs.
So I would do this:
Night 1) Read through book and help with 'tricky words' - but make a point of noting tricky word that is used more than 2-3 times for next evening. Also check that they understand what the new words mean - this can also be a problem.
Night 2-3) Read through book again, but this time DC reads all 'easy words' and we target 1 or 2 tricky words. Help first time and then really build up on next time tricky word is used - 'OK here it is again - do you remember how you said this....' Then really cheer and praise like mad when they get it right.
Night 4) Have a think - if your DC is fed up with the book, go for an old favourite - or ask that they read a few pages, and then on to old favourite.
Night 5) Read through again - but this time do different pages - so have him read two in a row, then you read one, then he reads 3 in a row, etc.. - mix it up - so he isn't always reading the same passage he knows well.
We'd usually only have a book for about 5 nights and then there would be a change - sometimes 2 a week - but that basically would get us through.
Boredom can be a real problem right now - so try to do a bit of school book each night, but do allow some 'free choice' of reading. The important thing is to be reading.
Free on-line books:
Oxford Owl: www.oxfordowl.co.uk/findbook
Mumsnet: www.mumsnet.com/learning/ebooks
Don't be snobby about what he enjoys reading - if kids magazines/ comic books are his thing, as long as he's extending those reading skills don't fight it.
Also - if you feel the issue is his 'sounding out skills' (phonics) - look into some jolly phonics workbooks - available from most major bookstores/ news agents.
HTH