Just chiming in support and agreement mukta. This is a big step for you guys - congrats on him finally sleeping new, that is wonderful. He is only going to be little for a short time and if this is working for all of you then I would go with it too.
I know that you had probs before if you brought him in bed in the middle of the night then you couldn't get any sleep. Maybe be clear with yourselves (between you and dh) what the limits are for you, ie only for EWs and not for NWs if that is what you want to do.
Like pp's said, enjoy the closeness, ds is probably really enjoying it. hugs hon, keep sleeping!