Exhausted

I have a 7 month old and he has been straight up exhausting to me. I feel terrible saying this. I love him to death, and he really is a simple, happy baby. But, here’s the thing...he cannot keep himself entertained on his own. I have to play with him 24/7. My husband is away for work for the next 6 months so I cannot just get a break anytime I want. I have my MIL but she helps me too and I just feel like I am always pawning him off on her either to shower, eat, or clean up. I feel bad. But it’s still not enough help. I get up with him through the night and have since he was born and I have been trying to crib train him and it’s going well. But he does end up sleeping with me for naps during the day. I am so tired that I either sleep when he naps or I clean. If I am not sleeping with him I only get 15 mins to do what I need to do and then he’s up. It’s exhausting. I haven’t done anything for myself lately. I have to stay up late if I want to cut my finger nails, shave my legs, or even eat dinner. Sometimes I skip dinner because I am so tired. He wakes up every morning at 6:45. Ladies I am going to lose it real soon if I don’t get a day break or something. I’ve been begging my husband to come home so we can go on a week vacation but he doesn’t have enough time off to do that yet. Plus he’s away for training for his specific job he will be doing soon. And I have used a play pen, a jumper, I even try and let him play on the floor in a baby safe room or even his crib and he will cry if I leave the room. Idk what to do anymore.