Op you have two really tough ages ranges on your hands there! Give yourself a break its bloody bloody grueling and hard. Most of my friends have gone back to work PT to get a break from their dc
!!
Nothing can destroy a relationship like babies can. Especially hard if your DH has no capacity for empathy. I have recently been ill but had full help from DH including one day off work he took to care for our toddler as I was bed bound.
In your case the first thing to do is be kind to yourself! You have been ill, your dh is not supportive and your EBF with a toddler! Its ok to feel crap, pushed to the limit and its not surprising.
Two - what are you going to do to make your situation better? The more break you can get the better, so how can you get a break if your isolated from family can you pay for more help - even on temp basis right now to get you through this. I view situations like this as a mini crisis - and if you have money - throw it at it! Can you increase your toddler sessions for the moment, to give you a break?
Re Baby, I EBf for three years, the intensity went through fits and starts and I did find, it was great at getting her to sleep.....I started to gradually wean her off, to just night - bit by bit.....when she was able to be more distracted as she got older and took more interest in food.
As I am sure you know with DC they change nearly every single day so you need to keep coming at a problem, with different strategies but dont be afraid to use them again in a weeks time as they have changed by then and may accept them!
Ask at the nursery if anyone there does baby sitting too always worthwhile to know in case you need back up, join local FB group if there is one, ask for baby sitting recommendations - seek out some help for the toddler should you need it when your ill.
Work out how to let your dh know how you feel without starting argument or pushing him away. I find his attitude shocking but if this is what your dealing with - coming at him moaning, arguing, etc is not going to help your immediate situation.
" dh I really need some help, I cant work out how to make my situation easier right now what do you suggest"
ie can he take annual leave for a bit? give you a break> is there anyone who can come and visit and take baby for a bit?