glossy. - your 10 wk old is maintaining her percentile and sleeping through - you are doing a really fantastic job. Really. This is an exhausting time - my dc2 is also 10 weeks and I think it's a rough time: lack.of sleep is building up, the care is relentless, the feedback fleeting, the hormones have worn off and probably the excitement, guests. gifts and offers of help have faded away. Please be kinder to yourself for starters 
as for feeding regime, every baby is different and I would not dream of telling you what I'm about to say is The Way, or Right: they are thoughts and experiences which.might jog you to try the ideas or know in your heart they are not right for your LO.
Firstly while I am no stranger to complaining about DH, it's worth trying to see his pov if only to help heal the relationship as it is tirung enough without arguing and tension. I think.a common issue is men feel helpless if the only thing that comforts a baby is breast as de facto daddy can't offer it. So on the plus side it might show he cares and wants to help your dd and you, and he might be able to help more...
as for feeding, for most children, especially in the 50th percentile, three hourly feeding would probably be okay. I didn't follow a particular regime, but I read books that recommended one and I read the Baby Whisperer and aimed.for 3 hourly feeding average, though more like (and this is pretty approximate as ds is still young and I'm getting.to know him, and the toddler has needs too....to say nothing od her wants 
)..for example 7am, 10am, 2pm, then cluster feed from 5-7pm to prepare them for the night ahead...
I used a feeding ap on my phone until a few days ago and logged when ds fed and watched the gap gradually increase: many apps will also let you see things like total feed time, so you could see if she spends the same total time on the breast with slightly longer gaps, if you decide ro go.that route.
One other strong thought I had when I read your post is when are LO's naps? ime feeding regimes work better when you have some sleep.regime to. For me the simple brilliance of the baby whisperer is if you can keep.them awake after their feed, then find the right environment for them to nap at the right time, babies can sleep through the two hour feed window. My DS is like clockwork: if he is not asleep.two hours after a feed he will cry for one and almost never sleep. I can let him suck my finger and distract a little bit its not fun and the danger is they get over tired and wither can't sleep or sleep immediately after the next feed, waking for another two hour gap, and so on...
if it is of any help, as dcs are same age, on a good day ( I stress I often get this "wrong" 
) DS will wake from night and feed, stay awake 2h, sleep for 45 mins; wake and feed, stay awake for 1.5 hours, sleep 2-3 hours, stay awake 1-1.5 hours and wake approx 5 pm for the final two hours of cluster feeding (2-3 feeds) and bath before.bed at 7-7.30 pm.
I suppose what I'm saying is dd provably won't be hurt if you don't feed immediately, but perhaps either compromise and start by distracting her for 10-15 mins to start with, and poss build that up I'd her tolerance increases, or try something like the EASY system ( no fixed times but a cycle of Eat, Activity, Sleep - Your time) and see if she happily sleeps through that two hor window.
As I say, just some ideas. You have done an amazi f thing growing, birthing and now nurturing and nourishing your baby, and in the end the baby years are fleeting so it will all be over before long, however much you feed!
sorry this is such a marathon. very kind wishes