I was (still am, sometimes!) a bit like you op, baby was attached to my boob constantly, he was a month early and quite small, clearly he thought he had some catching up to do!
For food I'd either do something quick for tea while dh had him and I'd then eat one handed while he fed. Breakfast and lunch I'd grab something quick if I was on my own or if dh was at home he'd make me something / have baby while I ate etc. I'm slightly embarrassed to say that even now at almost 8 months I still only shower when dh can take him, so the evenings basically! He'd probably be happy in his bouncy chair, but we can't fit it in the bathroom safely so it's not an option for us. If you could do that though, I'd recommend it!
I can say that it's now much easier to do stuff and has been since ds was able to sit up and play! He can go in his jumper, his highchair, sit on his mat etc or even sit with me on sofa and he'll play and I can do a job, eat a meal etc. Evenings and weekends dh has always had him for a bit so I can read, phone a friend or nap etc.
We got some of our evening back at 6 months when I started letting him sleep on his own (due to circumstances I was a tad otg with sleep guidelines) he now goes to bed between 7-8 and we can watch telly etc.
I've hardly left him with anyone other than dh, but that is because of lockdown. We'd left him for 2 hours with my mum on 2 occasions before it kicked off, but now we're having to build it up again and I think it may take a little while!
Hang in there, it does get easier!! Xx