Please give me tips on making life easier as a young family

[SearchingDory]

We are a young family of 3 soon going to be 4. Me and DH work full-time and DC1 is 2 years old and in nursery 4 days a week term time only. We don't have any family around to help with childcare. I am also doing a masters from work hence have DC at home once a week and get some studies done in the evening or weekends. I am currently pregnant baby 2 expected in September.
I am finding it all too tiring both physically and mentally. DS is awake from 5 in the morning and does a nap for 2 hours and goes to bed at 8PM. I take annual leaves to look after him during school holidays. I will be taking maternity leaves from September and after that DC2 will be starting nursery.
My challenge is that we are finding our days are very busy constantly juggling work, childcare and life admin chores. DH works all the days and is self employed so doesn't get any annual leave. He does bed time for DS but he struggles to wake up in the morning so I am the one who does all morning wake ups. We have been having lots of arguments because I feel constantly tired and I feel I need more support but it's what it is at this point.
I am worried about how hard things will get with 2 kids when we are already struggling with looking after 1.
DH helps with doing laundry and dishwashing and we have a robovac for cleaning.
I am looking for tips on how we can make our lives easier.

@SearchingDory easier in which way? My older kids have never woken at 5 but definitely wake later now, but they don't go to bed until 10. So you lose out somehow. There's also the chance your child will have some sort of SEN so things might look a little different. It's never easier but maybe less physically demanding.

I'd put the toddler in nursery during the holidays. Then have those days to get jobs done - batch cooking, big sort outs/tidy ups/deep cleans. Then it's easier the rest of the time you've got your kids to just keep on top of it all. That's what I do anyway. I avoid doing loads of jobs during nap time cos otherwise I'd literally never stop so I get what I can do done when my toddler is awake then when he's asleep I can do a quick tidy up of toys etc, might do a bit of prepping for tea- chopping veg etc but then I can sit down with a cup of tea.

I remember the days of 5am starts and it is absolutely exhausting even when you're not pregnant so you need to get your husband to do his share of those early starts. Struggling to wake up or whatever isn't an excuse. I could say I struggle to wake up when I'm absolutely worn out by the kids but I get up regardless. Because there isn't a choice. Theyre my kids and parenting them isn't something I can opt out of cos I'm tired.

If your husband is an IT contractor does he get a decent daily rate? Forgive me if I’m wrong but in my experience the rate is much higher than they’d get if they were employed full time so they could afford additional help with childcare.
I don’t think there is anything more you can do on your side, you have too many plates to spin as it is. I find batch cooking works for a bit but ultimately gets exhausting, and needs a chunk of time to do it. I think you need to buy in help.