Hi, you’ve a lot on your plate, and it is summer hols so you can’t even escape the 5 y.o. DC during school hours, right?
Breastfeeding on demand is hard, especially after 3 months when you’re at peak level of exhaustion. I had a reflux/cmpa dc2, and I found things improve here on in, as feeds space further apart and the baby gets more fun so older dc finds it more interesting. The exhaustion is brutal, that alone can make you sob and ache for a moment’s peace. Make sure you take your multivitamins and drink plenty of water - at all feeds day and night - as the baby is growing fast. The baby will not need to spend as long on the boob soon, if you’re hydrated and milk supply is good, and up that helps. A baby sling saved my sanity whilst with my other dc, I used it every day.
Regarding your DP, he sounds like mine. Happy to help plenty, but very busy and it seems unfair to expect him to pick up any more than he does, yet what i crave is emotional support, really. Someone who notices I’m exhausted and can “read the room”, give me a hug, ask how I’m doing and make sympathetic and encouraging noises. But I ain’t gonna get that, so for me the question became: how can I become resilient and independent of him supporting me emotionally?
I decided the key to it is sleep. When I sleep ok, everything improves. So I co-slept and I joined dc2 in bed as soon as dc1 was in bed asleep. I would eat my tea at 5pm with dc1, and always cook something that DH could eat at whatever time he finished work (either a quick reheat or sitting warm in slow cooker). I bought new pillows, a really soft mattress topper for our spare bed, and warm pjs and some soft fluff-free cardigans without buttons so I didn’t need a duvet. I’m not co-sleeping was the best choice as it meant not sleeping with DH, but between night feeds and DH snoring, I couldn’t have survived otherwise. I took my phone to bed, and played games, read books, messaged friends, watched Netflix if I couldn’t sleep, and this gave me my me-time, and also gave DH his evening so he could unwind and watch tv or go running (he is an introvert so company saps his energy).
Also in the morning I forced myself to be informative and practical with DH, not needy. We’d do a check-in on each other’s level of tiredness and anxiety to acknowledge that existed, then I would run through the day with him and anything that needed to be done we’d allocate between us, we’d also look ahead and plan the weekend so we had time to reconnect as well as ensure he had time playing with the kids (giving me a break, which invariably I spent gardening, as my chosen break from 24 hour childcare).
If you have an unemotional DH, it could be he is pushing emotions down as he is exhausted by them and can’t deal with yours as well as his own, or it could be he simply doesn’t really experience emotional highs and lows and can’t empathise, which is my DH to a tee. I pity you if that’s the case, as it is not easy to live with. Your best bet is not to count on him for emotional support, and find a way to do without it. Either find a friend or mum or MIL to share troubles with, or imagine you are a single parent and you have to do it all by yourself.
Good luck.