We dont do exactly that with DD but she has most of her day sleeps out with us in the lounge room in her rocker. She sleeps at night in her cot. Has slept through the night since 4 weeks old and have never had an issue and shes a fantastic sleeper. Will sleep anywhere.. on the floor, rocker, your lap, pram etc. We did similar with DS and hes always been a great sleeper also.

Best of luck.