Sleep and tired

My baby is 7 months and we’ve always struggled with sleep but I don’t know the last time he’s slept for more than 2 hours at a time I used to be good about logging everything but after 7 months of sleep deprivation it’s become harder for me to remember to do it. I’m struggling because I don’t have anyone to help while my husband is working (we live far from family) so there’s no way I can nap and ever catch up. I’ve resorted to watching Songs for Littles during the day at times because I don’t have the energy all day. Idk what to do