Hello trashcan my dt's are 8 too,
I got myself into what was a oddly strict routine in that feeds for the first 16 weeks, 3 hourly, days and night following on from the SCBU routine, I didn't need to feed at all between as they took what they needed.
but this routine left me free for anything else, I knew what time they where to be fed and would feed, leave the house and know I could be out for 5 hours with only 1 feed to do,
we did this throughout the night to until they where 7 months old when suddenly they slept through... one had naturally fallen into 5 hourly at night a couple of months before this and the first night was ...12 hours straight the first night then after 11 hours ever since.
important things to note are I was not a zombie for those 7 month, tired but not strung out, Dh would do the 12 midnight feed and the 9 am feed just before he left for work, I would go to bed at 10 sleep til 3 and 6 in a sort of half asleep way, I am sure many people now what I mean you are aware but as soon as you lie down straight asleep again, feed them, I would then sleep until 10.30am...yes I would, I didn't have to go to work, no one marking my time sheet, no prizes for staying awake after the 6am feed. they slept too trade off is no mid morning nap needed.
I don't think it is unreasonable for either partner to take time out from the children but it need to be as fair as it can be, you don't necessarily need to have a day or evening off every week to the minute he has, but nurturer your social life and make it clear that when you are out unless you will return home to find a vehicle with blue flashing lights outside your home, phoning you for every little problem is not an option :)
My DH did not take to this easily but nor did I, we had our moments, I remember the days shopping I had to return to 2 crying 12 month old's at 3.30 "they have been fine until an hour ago they they have been real pains" general chit chat ensued with them needing cuddles, my question of "what did they have for lunch?" was met with a blank stare and a "Oh! Fuck!" as he ran into the kitchen...
we all have really hard times I was lucky this work for me...I found 3-4 yrs old hell, constantly phoning DH in tears. whenever I found it difficult I would repeat "it is just a phase it won't before forever" I am finding 8 a golden age with mine, my friend is finding 8 a nightmare with her boy.
Take what I say with a pinch of salt, all people and children are different, get out on your own even if it is just to the supermarket, take all the help offered, if they find it difficult, they won't offer again but you will have had a least one break out of it, say yes to everything you want to do, worry about logistics later, if you do that first you will do nothing, negotiate with you DH might be the football idea seems to him a easier way to get you too agree to time out, but the real reason is he wants a few beers after with friends more, let him go for the beer after miss the footie, or have his friends round and you supply the beer, might be he is worried with his new responsibly and wants to get fit worry about his health and providing for his family, men need friends too and to talk through their new found "Dad" responsibilities
Sorry long but I really remember how hard the early years are, I feel for you,