Hi Ujjwal! Nice to see a familiar name/face on the asudis forum. Glad to hear that these style files are helping you.
I just added an "\exactdoublespace" formatting that will exactly double the single-space line spacing to satisfy formatting requirements. I put the TITLE-BY-AUTHOR parts in this exact double space environment so that old, single-lined titles work the same as they always did, while your longer title should also look correct without the extra \ \\ junk to fake a double spacing. You can download the new asudis.sty and try it out. The single \\ line break will let you choose where to break your title. -John