I feel for your situation, how difficult to try to eat a soft diet and control loose stools and not eat yogurt. There are many brands of yogurt now that are made with non- milk products, like almond milk, coconut milk, soy milk, etc. You might look to see what grocery stores in your area carry them. Here is a website that discusses this, https://www.laurenrenlund.com/2017/09/09/yogurts-low-fodmap-lactose-dietitian/.
I encourage you to read the entire article from the link above, however, here is a quote from this website that discusses lactose-free yogurts:
Since the food industry knows that many people are lactose intolerant, they are creating more and more yogurt options that are lactose-free. Making lactose-free yogurt is pretty simple. The manufacturers just need to add lactase, the enzyme that breaks down lactose, and the result is a completely lactose-free yogurt. If you see a yogurt that is labelled lactose-free, lactase will be listed in the ingredients list. Lactose-free yogurts taste almost the same as regular yogurts (the taste might be slightly sweeter).
It’s important to note that if you look at the Nutrition Facts Table of a lactose-free yogurt, it will still list sugar. However, this sugar is okay as we know the lactose is already broken down into simple sugars that are easy to digest. For example, this plain lactose-free yogurt has 4g of sugar per serving, but since lactase is in the ingredients list, it is low FODMAP.
Even when a yogurt is labelled lactose-free, you still need to read the ingredients list to ensure it is low FODMAP. In particular, the flavoured versions commonly have high FODMAP ingredients added. Some common ingredients you need to look out for are high FODMAP fruits, honey, fructose, inulin/chicory root extract, glucose-fructose, and sorbitol. It can be simplest to just buy a plain lactose-free yogurt and add your own fruit, a sprinkle of cinnamon and maybe a drizzle of maple syrup.
We now have one more option for low FODMAP yogurts. Monash University has recently tested coconut yogurt and found it to be low FODMAP at 125g (1/2 cup). This is a great option for those who are vegan or allergic to milk. Just like lactose-free yogurt, make sure to read the ingredients list and choose a yogurt without any high FODMAP ingredients such as inulin. Here is one example.
GOAT’S MILK YOGURT
Monash has tested goat’s milk yogurt and found it to be low at 1 tub (170g). Just like the other yogurts, read the ingredients list to check for any added high FODMAP ingredients.
You may have seen lactase supplements for sale in pharmacies. These supplements can be very helpful for managing lactose intolerance. They are taken moments before consuming dairy to help break down the lactose. I typically recommend clients to purchase lactose-free dairy products to use at home and save the lactase pills for when they are eating out. Talk to your dietitian to learn if they are the right option for you. Just like yogurt, some lactase pills have added FODMAPs. Read the ingredients to check to see if it has any mannitol, sorbitol, inulin, etc.
Lactase supplements aren’t always effective. This blog post by dietitian Patsy Catsos breaks down all of the possible reasons why."
Please post again, @sandyabbey, I'd like to know how you are doing.