OMG this is my DS totally. Everthing was going so well with his bedtime routine till i introduced the 'big bed'. It was a nightmare, DS would get out of bed countless times at bed time and throughout the night. I tried everything. I was also pg at the time and desparately wanted him in a bed b4 bubs2 arrived. In the end, bedtime was such a negative experiance i decided to put him back in his cot so I could get some much needed sleep. Everynight I would ask if he wanted to sleep in the 'big bed' or baby cot. I did explain to him if he did not stay in the bed he would be put back in the cot. This helped him get back into a routine and fall asleep on his own. One day he decided he wanted to sleep in the bed and stayed there. So what worked for me was the threat of going back into the cot. I wished that was the end of all the dramas, but then DD arrived; but that's another story all together and one i'm still working on
I think what you are doing sounds good. You do have to try to get DH to do the same as you as hard as it might be. Whatever you decide to do, both of you have to stick to it. I would give it at least 3 nights and assess the situation. Good luck.