Hi I feel for you and what you are going through. I can't comment on lactose free milk but all I can tell you is what worked for my little girl. She had terrible wind too, mostly from her bottom and was crying for hours on end every day, drawing her legs up etc. Evenings were generally the worst but day time was pretty bad too. We tried everything, infacol, dr browns bottles, colicinth homeopathic granules and colief. In the end the only thing that gave her any relief was dentinox. It was a god send. That very same day there was a massive improvement and every day after that. She is now a happy content, smiling baby! I still give her dentinox a few weeks later but not in every feed. You can buy it in tesco and sainsburys and it only costs about £2.90. Wishing the best of luck. I know how awful it can be x