I second the comment about taking shared parental leave - DH had always done his share of household stuff and was very hands-on with the baby, but I don't think he really got the relentless nature of being at home until he did it! I went back after seven months and he had two months at home. This made my return to work easier as I didn't need to stress about DD settling into nursery at the same time.
Our original plan was that we'd both drop to four days a week so only three days of childcare would be needed, but his employer didn't support him doing this. However he's just started a trial of compressed hours (working 10 days over 9), so he gets every other Friday off. Would your DH be able to do this? Don't assume that you should make all the adjustments to working life.
I'd also second the comment about household admin aka 'wife work'. What's he like at the moment - does he book his own dentist appointments, get presents and cards for his side of the family, sort out flowers for his mum on Mothers Day? I have never done this for DH, but did point out when we moved in together that some family members might assume I was responsible and judge me if he didn't do cards/ presents etc, then reminded him of this fact when it came to baby presents/ sending photos to family members etc.
The different standards might cause a problem when you're at home all the time - it would be easy for you to pick up his 'jobs' like emptying the recycling if he puts it off and you find it annoying. It might be useful to have a chat about this - one thing I've found is that if you leave stuff until later (like my DH does), there can be some baby-related issue later that means you don't get round to it. Plus once the baby is mobile, having piles of stuff (to 'put away later') around the house just gets in the way. Does he see what needs to be done and do it, or do you have to point it out all the time (adding to the household admin burden)?
I think it's easy to assume control of all things baby-related in the early months when you're at home, which can make it hard to let your partner do anything because 'he won't do it right' or would take too long. You have to hand over control if you want him to be an equal parent. For example DH signed DD up for swimming class and he's responsible for booking it, paying for it, taking her there etc. I don't get involved apart from going to watch a couple of times!
And a possibly controversial one - I couldn't get breastfeeding established so went onto formula quite early. This meant that feeds/ bedtime etc were split evenly from the start, and DH would do the night feeds one weekend night so I got some sleep. I had planned to mix feed once I had got breastfeeding established, and I can see that if you can mix feed or express bm so your partner can do some of the feeds, this reduces the burden on you and means he has more experience of looking after the baby. The mum friends I know who have exclusively BF are the ones who haven't been able to be away from the baby for very long until the baby was older, which I would have found very difficult. But your mileage may vary, all babies are different etc.