Possible Issue with an Acer 'Bloodgood' Tree

If they're still flexible, they're pretty much alive @Kevin Cowans . You'll see little grey bits on the ends of branches - those are the dead bits, and if you have those, you can snip them off back to the healthy section. You can really do that at almost any time, but large sections are best left until dormancy. If you don't see any grey ends, just leave it for now.
It's usually fairly obvious when a branch is completely dead though - and it'll be quite noticeably a different colour from the healthy material. Removing those is best done in winter.
For now, as you have that new growth, I'd spend more time getting the soil in better condition, and making sure any material you add is on damp ground to help with that retention. If you're needing to use those hoses, it may not be the best plant for the site though. If they don't get roots down properly in their early establishment, that can cause problems later on.
I see there's a building just to the other side of the fence [garage?] and that may be another part of the reason why it's now struggling to thrive. A consistently dry site, with nearby footings from a building, making it harder for roots to reach moisture, will always be tricky.

 

Hello @fairygirl

Thanks for the Reply.

I will do as you have advised and see how it goes.

Thanks for your Help.

Kevin