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My site is www.grocare.com for one region and in.grocare.com for another region. Both of them have the same content except the currency for particular regions. Someone told me that google will take the content as duplicate and not rank either. I have setup hreflang and targeted different regions for both in the search console. I read many article which say canonical urls need to be setup for international seo sites. But Im not sure how to setup canonical urls and whether they are the right way to go . i just don't want my content deranked.

Now i have setup hreflang properly after asking the moz community itself. So im hoping to get some help with this query too. TIA

Ah! You're right! Thank you so much.

The IN version was pointing to the EN version. As per Hreflang generator - Aleyda Solis I have to add this to the head area

https://www.grocare.com" hreflang="en-us" />

https://in.grocare.com" hreflang="en-in" />

The only doubt i have now,  is whether I should add both these tags on both sites? Or should the EN version be added on EN site and IN on IN site?

I have a store ( www.grocare.com ) and I made a duplicate store recently ( in.grocare.com ) for a different region. Both have different currencies and target different regions. I even targeted the new store ( in.grocare.com ) to that particular country in google search console. They both have different href lang tags to mark different regions too. Now its been a month since this has been done.  But the new store is not ranking in the region. The old one is still ranking and I have to redirect the traffic from old to new based on IP. 
I thought making a new store and targeting specifically would help with rankings. Am i doing something wrong here?