I put whipped soy milk on my vegan homemade pumpkin pie last night and it was great. Do not miss dairy, and am thankful for modern food innovations that are helping us get past the suffering and environmental devastation of dairy.
If it’s for some kind of ideological purity thing, it’s probably not worth it.
But if you must… oat milk for coffee is my preference, and pea protein for whey.
I would also strongly recommend looking for vegan groups wherever you live. Joining a local community and getting support can be helpful.
The hardest part for me wasn’t to remove the obvious diary (milk in coffee, yogourts, cheese…) but the many form of processed milk present anywhere in processed but also traditional dishes.