Originally posted by: KJasoosChulbulP
 
for the kid. The usual. Bottled water. Pasteurized milk. No raw veggies. Fruits. Etc. You know the usual. 
For Haridwar. I recommend - if you gonna take a dip into Ganges. We found Rishikesh far better and cleaner. Crystal clear Ganges waters thaaa. 
I like Dehradun and frankly Mussorie we really liked a lot. We like mountains. What is the timing your time of trip. Valley of flowers there is fab (our trip wasn’t timed well to go there but it’s one of a kind treasure j am told). 
that’s doable around Haridwar. So one trip possibility. 
Others to think 
Maharashtra. -
 Tadoba. I have an affinity for forests now. 
Short and sweet not far places from Mumbai are lonavala / panchagni / Mahabaleshwar. If You can fly into Pune might be better for those vs drive from Mumbai - Those are like 3 nights / 4 day trips. 
Deolalee near Nashik is famous for short breaks 
rajasthan - honestly you can’t go wrong. Palaces and stuff. Jaipur / Udaipur. Ranthambore .. etc. Lots and if you don’t want safari type trips with younger kid. I think Rajasthan might be better. 
Gujarat - I am guessing you have seen a lot. And prolly know more than me even but plenty to do — Mount Abu is fab also. 
Let me know if that’s a good list. Btw. How old is your kid. If you don’t mind me asking. I can also ask my sis if she has other ideas based on kids age.