Those who read Philippians 2 in agreement with later Trinitarian dogma are invariably scholars who have a prior faith commitment to the Trinity. Scholars who approach the text from a historical perspective read the text in its own first century context, not the fourth century. Many more scholars could be cited, such as Paul Holloway, who explains the passage this way.
Paul conceived of what is commonly referred to as Christ's incarnation as a kind of metamorphosis. According to Phil 2:6-11 Christ was a mighty angel who originally existed "in the form [opñ] of God." For the sake of humans and in obedience to the divine will he took "the form (opon] of a slave," changing himself into human "likeness" (Quoíwua) and "appearance" (oxnua). After his death on a cross, God restored him to his original angelic form, but now as the even more glorious ruling angel who bears the divine Name and shares the divine throne: "therefore God more highly exalted him [UTEpú|woe] and gave him the Name that is above every other name [rò ovoLa Tò UTTÈo Tav övoua], in order that in the name of Jesus every knee should bow .. to the glory of God the Father. "
Paul Holloway, (2017). Philippians. Fortress Press, pages 49 and 50.
You don’t need to agree with the way JWs read passages such as Philippians 2 but you would do well to acknowledge that their reading of such texts is in line with a broad sweep of serious scholars who have studied the text.