An hour a week is not much. There is a lot to take in. The teacher should perhaps move more slowly but group lessons can be awkward.
I skate on wheels as well as ice, and have done since I started more or less. It took me a few months to get completely used to switching BUT I use ice figure skates on ice and standard inline rollerblade skates off ice (these days I have rockered frames) so I do not have much of a heel under me on wheels and no toepick, no tail behind me and a banana rocker rather than the front-loaded curve - so overall my inlines probably feel more like hockey skates. "Off ice skates" from whatever brand (PIC, Snow White, Off ice) will feel more like ice figure boots - the blade shape and the boot, so will be easier to transfer to. I would say though that the wheels on off-ice skates are generally smaller and less robust than standard inline wheels so they will wear more quickly especially on rough outdoor surfaces, and you will feel the bumps. Also if you are skating outdoors I would recommend wristguards as a minimum, be prepared to feel unsafe because of bumps, slopes, moisture, grit, leaves, twigs, obstacles. Learn to scissor over bumps, have really soft knees. Outdoors will toughen you up but it might be too much like kill or cure, so perhaps best to find somewhere indoors like a school hall or roller rink. There are some options where I live for indoor skating in school and sports halls - worth an internet search.
The basics of skating are the same for ice and wheels - it's all about balance and being over your skates. If you can find a spot on wheels that works for you, and get past the initial weirdness of switching, it will be of great help.
Good luck and happy skating.
