toddler and one on the way

anyone have a toddler with one on the way? or did? how did you manage things? was it difficult? my LO is 19 months (I guess almost a toddler) she'll be 2 in May and my DH is a LEO (police officer) for grave. I know during the day won't be as hard but as for night and putting them to sleep will be. LO still needs a bottle here and there and sleeps in the crib until 4 am than in our bed. advice? trying to get LO to sleep on her own now ️than later