However, I do use a wheelchair. Dear Jason, Baptism is a commandment, but Christians can often become confused about what it is, what it does, etc. With infant baptism, this commitment is made on behalf of the infant, by parents and family, in advance of the age of decision-making capabilities. Entire denominations have formed, breaking off from other church bodies, over these issues. But the book of Hebrews tells us that Christ died for us once and for all, and there is no reason why we need to offer sacrifices daily or annually, as did the nation of Israel under the old covenant.
Baptism is an outward act which publicly testifies to the believer's faith and commitment.
If you wish to be baptized as an adult, there is no reason why you should not do so, as long as you realize that you are not commanded to do so, because you have already been baptized. However, if you are convicted that infant baptism is not what the Bible teaches, then you should be baptized as an adult. But you should also not labor under the illusion that baptism will do something for you that god has not already done. May God bless you.