Hi Helen! Ms will definitely not stop you skiing and depending on how it affects you there are multiple options out there for you
Like the others have said, building up core strength and muscles beforehand is very useful as it is a tiring sport when learning. Advice I give to my fellow skiers is listen to your body, you know its limits best so if you feel tired-have a break even if you are having a blast. 5 shorter days are better than one long day and 4 days to recover!
Disability snowsport uk is a great place to start- they have a range of options for you with private lessons, group monthly meets, activity holidays and years worth of experince and knowledge.
Sounds like you would be able to stand up ski, an instructor will be able to guide you with techniques and there are many ways to get the body to turn- it doesnt have to be perfect and at performance level but if it works for you who cares! There are also outriggers which are crutches with skis on and can help with balance and aid the turn if your legs don’t always co-operate. If your legs tire easily and you find it more of a struggle and want more a different way to explore the mountains-a mono sit ski could work if you can good upper body strength and can balance well sitting down. You can be fully independent and they are super good fun! It takes time to get used to but if you feel you want to ski regularly then it could be an option but they are expensive to buy but Disability snowsport have some and so do some big ski resorts. If you feel you don’t have the strength/co-ordination or aren’t going to ski too often a bi-ski is a sit ski and is much more stable and you always have an instructor working with you on the slopes. You can get semi-independant on them and can explore large areas of slopes. Again DSUK have these and so do some big resorts.
I am currently living in limbo land, but have skied with my balance issues and a weaker right leg too. I found my legs would go into spasm if i went to hard and long, and fatigued more quickly but taking breaks and eating/drinking lots does help and good excuse to enjoy some apres! I also had to watch the cold as I can’t feel parts of lower legs had to check they weren’t too cold/frostnip forming. Speed can be your friend too as I find if I go too slow its harder work! I did find shorter skis help (tips around shoulder height/chin height is sufficient) to begin with and as you can speed/skills/confidence longer skis are usually more suitable. I am going to go to a indoor snow slope this summer (much quieter than winter) and see how this latest health blip has affect my ability. I have definitely got worse in the 6 months since I last went but am determined to enjoy my favourite sport still-even if it is a different manner!
Are you aiming to learn in Britain or go on holiday with family/friends, by yourself? Avoid dry slopes unless its absolutely necessary!
Sorry for the waffly message! Defo keep going and persevere as skiing itself is a great workout for the whole body and does feel like freedom when you get going! enjoy your trip, set realistic goals for yourself and what you want to achieve,the socialising is great, enjoy other mountain activities if you do want a rest day, listen to your body but most importantly HAVE FUN!
I used to/aiming to get back to working as an adaptive sports instructor and specialise in skiing so I am more than happy to try and help if you have any more specific questions!