No Constitutional Amendment is required to end all abortions. Read the document that really gave birth to the United States - our Declaration of Independence. The right to life is not a product of any constitution or statute. The right to life is a gift of God.
You need to deal with political reality. That's just not going to happen in the foreseeable future. There were states that permitted abortions prior to Roe v. Wade, and that was in 1973. If we overturn Roe v. Wade, some states will allow abortion. The only way that would be stopped would be by a constitutional amendment, which is a very long process and a remote possibility. I'm not talking about what you or I would like, I'm talking about political reality.