I think you are an in enviable financial
position but that doesn’t mean that those who are wealthy always have amazing relationships and never separate / divorce.
This is about respect to you and whilst you can accept that due to his really long hours you will be doing more than your fair share of the housework / mental load that does not mean that you should be waiting on him hand and foot and tidying after him .
Something has to give . Do not make the mistake of thinking that it makes sense for you to drop your job as childcare costs may be greater in the short term .
You need to think about the longer term about what will make you happy and it seems like you are someone who enjoys working and the intellectual stimulation you get from this .
The first few years of parenthood are hard and you are in the enviable position of being able to afford to chuck money at it , which can deal with some of the issues .
Things to consider ; are you happy in your job or would you find something else more rewarding / consider retraining / studying for another role ?
If you are happy in your role / vocation - would it help to reduce your hours ? This could be to decrease them with the view that you can build up again when your daughter is older . Primary teaching does allow you the flexibility , but it has to be what works for you ie that you do not end up simply being paid less and working the same hours to get the job done .
Whilst your husband is building up his business is there any help that he can get that he doesn’t already have ? If he isn’t poor at delegating , can he get an assistant who would do more of the lower end work .
Look at others have said at what you can outsource and help you , nanny , childcare , cleaner , gardener etc .
Boundaries in your relationship . For your relationship to thrive , you need some non negotiables - holidays . You can afford luxury holidays , although not all of these will be child friendly - you can also bring in help here or outsource cooking , eg takeaways / lovely food so you keep cooking etc to a minimum if staying in a cottage / apartment . Some hotels / resorts will also have apartments where you can have space as a family but can still eat on site .
I think communication is important here and also that you agree when your DH is able to devote to family time , weekends / part of a weekend , set hours during the week . Due to the nature of his job , this will be less than those who work 9-, 5 but it is important for everyone’s happiness especially your daughter’s that he does prioritise this time . I think if you don’t address it this will cause further resentment on your part and ultimately greater difficulties in the relationship . It is also important that you connect as H& W too and also pay attention to this . This could be putting in date nights , even if only once a month . It could be a bottle of wine and a takeaway but will help you stay connected.
Good luck .