Sleep training toddler before baby #2

Any moms with 1 or more kids already I need help here. My 14 month old still uses a paci and will not go to sleep unless I hold her and rock her. With baby #2 coming in July and I’m hoping to have her off the paci and going to sleep without me rocking her by June. Any tips?? If I even try to put her in the crib awake she will SCREAM like someone is hurting her. I’ve tried not using a paci but she throws a fit. I tried giving her a lovely to comfort her instead of a paci but now she wants both to go to sleep. She’s an excellent sleeper so I’m also afraid changing things will affect it. Help!