Dear Janhavi Sharma ! To dissolve the polymer, it must first be allowed to swell, and then dissolved with intensive stirring and heating. Swelling should be performed with a small amount of solvent. And the dissolution is carried out with the gradual addition of a solvent.

https://www.researchgate.net/post/What_is_the_best_solvent_of_PEO#:~:text=PEO%20also%20dissolves%20in%20many,with%20solubility%20increasing%20with%20temperature.