Hi Achoo:
I saw this before half term and dwelled on it in terms of helping my own DD1 (new to Y7) with her homework.
DD1 was at a primary that when homework was prescribed by the government used majority of 1.5 (KS2 lower) or 2 hrs (KS2 upper) of homework as independent reading (there was no checking on whether children read or not & not much written work for the kids to do about their reading - it was just that nightly children should be reading 15 - 20 minutes). Maths homework was never more than 10 minutes - and very intermittent. Usually given once a parent complained about lack of homework & then swiftly forgotten again.
So DD1's issue is actually coping with a number of assignments of varying length & deadlines - some are straightforward (worksheets/ fill in the blank/ vocabulary) and others are more complex (preparing a presentation on which charity Y7 should support, for example - which involved research, learning how to use powerpoint, etc...).
So yes I've been helping quite a bit:
Showing DD1 how to prioritise work (do the work due tomorrow first kind of thing).
Looking over work and saying 'Really?' you think that's what the teacher was after? Just 3 lines on this? No research? Just your opinion based on what you remember of a Horrible Histories episode? No references. No explanation which question you're answering. No date. No name?
So really just showing the basics of setting out homework with name/ date/ assignment brief - question to be answered/ etc....
I think with your DS Achoo - I wonder if part of the resistance to homework is that he finds it tricky (not mastering times table facts by now is a real disadvantage) and I also wonder (as you said above that you don't like 'homework' interfering with family time) if you're not signalling negative attitudes toward homework.
With times tables - there's all sorts of great free websites out there offering video game type formats to practice and improve speed of recall of basic times table facts to x12:
Woodlands Junior School Maths Zone: resources.woodlands-junior.kent.sch.uk/maths/timestable/index.html
Multiplication dot com: www.multiplication.com/games
Timez Attack has a 2 platform free version you can download - where you're cast as an ogre and have to run through a castle/ dungeon maze solving multiplication problems. It feels like a video game and puts you under a lot of pressure to solve problems quickly: www.bigbrainz.com/Multiplication.php - It's quite a challenge and the ogres are pretty fierce - but by playing the game the system works out which times tables are your problem area and keeps drilling you on those again and again. Yes I suppose it is learning by rote - but it's learning through practice and each time you are also shown that it is multiple additions of the same number - so 6 x 7 is shown as six blocks of seven and counted up 7 - 14 - 21 - 28 - 35 - 42. For both my girls - this game has helped them move from 'knowing the answer, but being a bit slow to arrive there' to instantly knowing the answer.
I think if anything - the key is to get your DS to see that by putting the work in now - it will make homework easier & less time consuming in future. It's important to recognise that the work will only get harder.
Finally - I know that with your own work - it can mean that you're getting home late in the evening and rather than relaxing with your family, you're struggling to get work done he needs help with - but I think you also need to see this as 'family time'. It is important to give your child educational support and to help them on their way as a student/ adult. It's like learning to speak or walk - it took a lot of your time at the time (I don't know about you but I put socket covers on, corner bumps, cabinet locks and moved breakables high up once they were 'cruising' + the requisite holding hands and walking slowly) - but it was just part and parcel of being a supportive parent.
It may not seem like 'walking' - but this is the stage your DS is at - and a few months hard work from the both of you can really crack a lot of these 'problems' - making homework more enjoyable for the two of you. Usually getting positive feedback from teachers and better results reinforces that putting in the work is worthwhile.
I am starting to come home from work now to find DD1 has nearly completed all of her homework - and I can hear about her day, look over her work and have a cup of tea & a bit of relax now. It's taken 2 months to get to this point - but I do feel that DD1 is now trying to manage her work on her own and really just using me as a sounding board, whilst I'm drifting about (cleaning/ cooking/ helping DD2 with her homework/ etc...).
Have the battles now Achoo - it's worth it for him long term, it will help him get over this particular hurdle - and it will mean that homework will become less of a chore long term.
HTH