I had the same thing prescribed for my girl's RI, and I had my bf hold her while I got the syringe into her mouth. Then, slowly but steadily, I pushed the plunger down until it was all gone. She did bubble some of it out of her mouth and one time she snorted a little bit out of her nose but every time she'd keep "yawning" and tilting her head up for a couple minutes. It's normal, they don't much like having liquid forced down their throats, much less having something forced into their mouth in the beginning.