Clingy baby

Any one else’s little one super clingy. It’s becoming overwhelming trying to get any thing done. He’s 14months and walking. If I’m sat on the sofa and try put him down 90% of the time he cries and arches his back or tries to hurt himself. He’s my 3rd baby. I also have a 6,3 year old which don’t get me wrong my 1st was clingy when he was a newborn but soon grew out of it. I feel like my son was a good as a newborn but these past few months he’s become so clingy he even cries at his dad so I just don’t get 5mins. Mornings he sometimes has to cry for a few minutes while I dress myself or my 3yr old. Or I’m holding him in 1 arm trying to multi task. When I come back from the school run I can’t do a single thing because he will just cry for me. If we’re in the house he will only settle on me and will wake when I put him down. Nighttime we co sleep and he hasn’t slept in his cot since probably 8/9months maybe. I just feel like he’s stuck on me 24/7 and it’s super hard to just have a breather. He’s such a cheeky baby too and I hate feeling this way because I love him so much but I just wish I could do more in the day. We went to a party last night I tried sitting on the dance floor hoping he warmed up to the room but he didn’t so we just sat down the whole night. Any tips welcome please. I’m about to leave him for 4nights to go for an op next week and I feel so guilty leaving him. But I know it might do us both good. Will this sTage eventually go, could it be to do with his development ?