OP: best of luck with the residential school. Will
No Doubt add more tricks to your parenting tool-belt even if you don't implement everything they suggest.
To help with the tired-ness etc can you put bub in care a day a week? Or get a home helper for a couple of half days? Or sleep during the day and just let the housework go to crap? Or get a cleaner?
The sucky newborn period will be over soon. Hang in there. Don't worry about anything other than feeding yourself and bub and sleeping. Everything else can wait for the time being xx