M.F.
This is too funny I think you have been putting my baby to bed! Just let him play for a while and as long as he is not freaking out see how long it takes him to relax and go to sleep. Do you get up early is there a reason he goes to bed at 8? Maybe he isn't tired yet? It took me about a week to get my son to sleep in his own bed we co slept and he kept wanting to nurse all night and I was sick of being a milkmaid all day and night. So just figure out what will work for you. Put him to bed later or let him play in his crib and go about your business see what happens. If it takes a week or two of being up till 10 its bettere than creating a monster that eventually won't leave your bed and demand that you cuddle him all night, wich really isn't possible if you have stuff to do. Good luck