Thank you for your query.
I understand your concern.
Do not panic.
You can easily shift to any milk that you have mentioned.
Zerolac is lactogen free so it works in lactose intolerance
Zerolac contains the same amount of calories that other milk contains. Zerolac can be continued if you want.
Hope this answers your query.
If you have any other queries kindly direct them to me.
Wishing a speedy recovery.
Have a nice day.