There isn't a way to exegete Thomas' words.
Yes, there most certainly is and many have done so. The text clearly says that Thomas "said to him," which refers
only to Jesus. There simply is no question that Thomas called Jesus his Lord
and his God.
Either Thomas didn't mean explicitly what you seem to think he said or he was a lone wolf. No one echoed Thomas' words, not even Jesus.
Thomas meant exactly what he said--it isn't even a matter of what I "seem to think he said;" the Greek is clear--and he wasn't a lone wolf. One has to ignore many things Jesus said to think that he never explicitly or implicitly claimed to be God, equal to the Father. One also has to ignore many things the writers of the NT state. And that is the ongoing issue.
As I have stated more than once, Jesus not only does not rebuke Thomas for his words, he acknowledges Thomas's faith
based on those words. So, even if Thomas was a lone wolf, that would make Jesus a blasphemer if he wasn't actually God.
We should be followers of Jesus who said that his God is the Father.
John 20
17“Do not cling to Me,” Jesus said, “for I have not yet ascended to the Father. But go and tell My brothers, ‘I am ascending to My Father and your Father, to My God and your God.’ ”
From the Jamieson-Fausset-Brown Commentary:
"
I ascend unto my Father and your Father, and to my God and your God — words of incomparable glory! Jesus had called God habitually His
Father, and on one occasion, in His darkest moment, His
God. But both are here united, expressing that full-orbed relationship which embraces in its vast sweep at once Himself and His redeemed. Yet, note well, He says not,
Our Father and
our God. All the deepest of the Church fathers were wont to call attention to this, as expressly designed to distinguish between what God is to Him and to us -
His Father essentially, ours not so: our God essentially, His not so: His God only in connection with us: our God only in connection with Him."
It is a statement by the incarnate Son that he was returning to the place he had prior to his incarnation (John 1:1-3; 6:38, 62; 8:23-24; 16:28; 17:5, 24; Phil 2:5-8; etc.)
We must understand the entire context and not ignore John's prologue, Jesus's claims to have preexisted with the Father and his claim to be the I Am, Thomas's clear confession, etc. And those are from John's gospel alone; there are still all the other NT passages.
There are two equal but opposite errors when it comes to understanding Jesus and his relationship to the Father. One is to take every verse that speaks of Jesus's humanity and use them to trump those which speak clearly of his deity. The other is to take every verse that speaks clearly of Jesus's deity and use them to trump those which speak clearly of his humanity.
You, and every other denier of the deity of Jesus, continually do the former; Gnostics do the latter. But that is only how one forces one's bias and preconceived ideas into the texts and is not good biblical exegesis. Trinitarians, however, do what should be done by taking it all into account and making sense of all of it.