basically, he is being a selfish git, and really needs to rtake his head out of his own arse and put himself in your shoes for a little bit.
and to be understanding towards you.
I only have one child to deal with, but by god! does she get on my last nerve sometimes!
like now, she's mobile enough to have climbed up the stairs and has been throwing magazines down the stairs.
I have retrieved her and put the magazines away twice in the last 10 minutes (with a bit of a delay on my response)
I have now put a barrier over the top of the stairs and put her and the magazines further onto the landing so she can't throw them (because sod's law says eventually she would be throwing herself, and I can't see round corners)
she'll be happy enough until she gets lonely and wants to come downstairs, whereupon, she'll start whingeing, screaming or crying and going "muimimimiimimimimimiimimi" until I fetch her.
then she'll be clingy for about an hour, then she'll be hungry and thirsty and want a nap.
but she won't go down for a nap, she'll need feeding to sleep, and then she'll sleep on me.
so that's your 12month old dealt with.
now let's add your 2.5yo.
i don't even know what 2.5 yo do, but I have storytime on a tuesday, and I have a couple of 2.5yo at that. after 1 hour of storytime, it takes me an hour to tidy up because they've been running round the shop, pulling stuff off shelves, playing with the toys and "tidying up" (because 2.5yo version of Tidying up might as well just not bother!)
and that's before I've managed to get myself a drink.
If I didn't have DH coming in at lunch to make me a sandwich and a cup of tea, I would be eating nothing all day and just giving DD her food and drink.
and if i get hungry once she's decided to BF!!!
well, there's no chance, i might as well die.
So what happens when your 2.5yo is bored, hungry, thirsty when you've just settled down to BF your 12mo? you can't get up, can you? which means you'll have a nagging, whingeing 2.5yo calling for you for an hour, or you'll get up and help her whilst the 12mo is (very heavy) trying to stay latched on. which will just annoy and hurt.
so, you manage to get something to entertain the 2.5yo. (providing she hasn't already helped herself to the contents of the kitchen or bathroom cupboard)
What time is it now? about 1pm?
how long till DH gets home? 5 hours?
oh good, maybe in that time you'll get to go to the toilet.
but wait, you really need a poo, and 12mo is being clingy, but you can't put him down because he'll cry, so you take him to the toilet. and getting trousers/tights/knickers down whilst holding a baby is sooo easy.
and because your pelvic floor is shot from birth, you can only poo in a certain position, so either the 12mo goes on the floor and screams or you squash him.
and in the meantime, 2.5yo is sitting in front of you saying random things like "why is the sky blue?" "it's cold isn't it mummy" "why is your bum hairy?" "I'm going to have ice cream on the moon tonight" etc
and then randomly runs off and starts making noises from elsewhere when you can't see what she's doing, and you certainly can't move! so you sit for 5 minutes panicking about what mess you'll have to clear up,.
and 12mo has decided you're now uncomfy to sit on, so he wriggles and writhes to be put down and then decides to ransack the bathroom just out of your reach.
then you stand up to wipe yourself (that's presuming that this time you've actually finished your poo).
you never knew a 12mo could move so fast - before you've finished wiping and pulled up your knickers, he's got his hands in the toilet bowl - you haven't even flushed!!
now you've got to wash him (and the floor)
and you still don't know what your 2.5yo is up to, but she's yellling mummy so loudly, it can only be a tin can on the head (or the bin)
.....................................
yea, i can see how you don't need a break when he gets in from work