I have 22 mths between my boys too and I think it is one of those things where you cope because you have too. DH had holidays for 4 weeks so we tried to get into a routine before he went back to work. I didn't have any problems with jealousy. Mason loved watching a video when I was feeding Angus and when Angus was asleep I read Mason stories and played trains and stuff. I was lucky as Mason still had an afternoon sleep so I had a sleep then too.
I took Angus around with me as I was worried about Mason hurting him.
He only hurt him a couple of times but it wasn't out of mailce, I think he was only curious and couldn't understand why he couldn't do what he could do.