From the parking lot of his Methodist facility, he should be able to drive a mile in any direction to find a Baptist church. I’d have to say he is really about a day late and dollar short on waking up to the non-Biblical nature of the United Methodist Church. From personal experience, he should also be warned not to expect warm acceptance as the Baptists will expect him to come to their view of confession to salvation, followed by baptism into the church. Expecting to just cross the threshhold and become a “member” will lead to disappointment.
I would disagree with the statement that he won’t get a warm acceptance. No baptist church (except maybe Westboro) will prohibit someone from attending or participating in corporate worship. Most baptist churches, historically, have restricted the Lord’s Supper to members, although this has changed greatly. As far as joining the church, there are biblical requirements, such as having received Christ and being baptized biblically, by immersion, as this is the first step of obedience in the life of a Christian.
Of course, it depends on which church he goes to. As Baptists believe in the autonomy of the local church under Christ, there is great variety.