Someone please give me some advice

So the passed few nights my son has been up until 7am and I keep falling assleep while either holding him or nursing him.. and I know that is unsafe :( I’m freaking out something happened to him when I do this. I just really don’t want to cosleep anymore, because of the risks that can happen.. this is in a recliner chair. He’ll cry his eyes out if I lay him in the bassinet. I work a second shift; 2-11pm. I just reply need some advice to not cosleep anymore

Also how can I get my son back on a regular sleeping pattern? He used to do good sleeping through the night, then I think he started teething. During the day he’s so tired he won’t wake up.