Making plans like you are is very smart. The helplines and shelters will be understanding if you're not ready to leave. They're going to support you and guide you to make good decisions for yourself. It's okay to take things as you need to, keep aware of keeping your and your baby safe. The more you plan and talk with others, the more options you'll probably start seeing.
Sending prayers for safety for you and your son.
May you both have a Blessed Easter - in any way, big or small.