Improve the existing mix

I have a 15-second medical advertisement that needs a focused audio-timing adjustment. The voiceover and visuals are already in place. I need you to improve the perceived synchronization of: - The first nasal-spray sound - The second nasal-spray sound - The sniff The spray sounds should align as naturally as possible with the visible spray actions—not merely with the voiceover. The sniff should feel connected to the actress’s physical movement rather than like a stock effect placed over the video. The exact actuator press is partially obscured, so we are looking for the most believable perceived timing at normal playback speed—not forensic frame-perfect synchronization. Please make the spray sounds noticeable but realistic. The sniff should be subtle, dry and human—not exaggerated, wet or comedic. Do not alter the video, copy, logo or end card. What I've attached: - The New England video to be adjusted. - The Dallas version as a creative reference. Please provide: - Final MP4 with the improved audio - One version with a subtle sniff - One version with a slightly more pronounced sniff This is a $100 fixed-price test, including one reasonable revision.