Tired

Sahm mamas, how do you do it? I'm sat here so damn tired right now and ALL the time. I was a sahm up until my middle child was about 7, I then worked full time for 4 years and had my now 2yo and back to being a sahm. Don't get me wrong I love it but I'm so tired all of the time. (My partner is around and is very present although he works away and in the home) I thought when my 2yo stopped waking hourly I wouldn't be as tired or when he started sleeping through the night but I'm probably even more tired. Sometimes I'm so tired and if I don't nap with my toddler I could cry. I don't know how we make it through the day, we don't do as many things as i want to do especially development wise, we've leaned on tv a bit too much lately especially after coming out of hospital for a week (he had to have nebuliser, steroids etc) which I'm trying to reduce but sometimes failing to do so. We go to playgroups, softplay etc all the time. I've had a blood test waiting to see a gynae dr. I feel like there's so much more but I just don't know.