The thing is, when people who aren't self-employed go back to work after maternity/paternity leave, they have to pay for childcare or give up work. The fact that you both work from home is not really any different - you need to factor in childcare costs unless you can both work completely opposite hours.
I'm on maternity leave and have an 'easy' baby, but I've also done a tiny bit of freelance work while off. And that's been a struggle. All babies are different but just to give a rough idea:
2-3 months, baby was sleeping 5 hrs straight at night (8pm-1am) at best then waking every 2 for a feed, so I was still trying to take a morning nap with him. Did a bit of freelance work- took me A LOT longer than usual and was a real chore to fit it in. Could do bits while bouncing baby in chair/ napping but could only really get into it at the weekends when DH took over for a few hours at a time - would have been a lot nicer to have time as a family with our lovely new baby.
4 month - sleep regression hit. Baby up every 30 mins/hourly over night. Daytime naps were 30mins max= me a zombie. Survived on coffee. Nothing got done.
We're now at 6 months. Baby is in a great routine, has just started sleeping through the night (I feel very lucky). Naps are 1 to 2 hours. Absolutely no chance of working while he's awake as he wants constant attention. Could get some work done during his naps but that's when I shower, put washing on, prepare food, clean.
The only way it could work with you both working from home is if you can take caring for the baby in shifts. Why don't you try it for a few days? (great chance to put your feet up with a magazine!) Have a rule where your not allowed to work at the same time and see how it goes?
Oh and I really hate to say it but if you choose to breastfeed then you may find it very difficult to leave for longer than a couple of hours. At 3 months my baby started to completely refuse the bottle- absolute screams and we could not get him to drink from it despite him being combi fed (mainly breast with some expressed bottles) from birth. Took us 4 weeks for him to start taking anything from a bottle again and about 2 months for him to take a full feed. Of course all babies are different and lots are totally fine with it, but my good friend is currently having the same issue and if you Google it (as I did desperately as I had to be away for a full day) it does seem quite common.
Very best of luck to you. I hope you find a way to make it work
- sling
- work opposite hrs to DP
- family help
- cut back commitments
But remember it's a wonderful but difficult time and even those who take a full year off work can struggle so please be kind to yourself.