Hi... Please suggest me which company's sling carrier is best for 3.5 months old baby?

Explore the option of baby wearing with wrap around slings. There are various brands available in the market.

anmol has good reviews though I have not personally used it... but I have also got feedback that for smaller baby it's fine but sling is problem for ur shoulders post like 6 months or so coz the entire baby weight is on 1 sholder. wraps are generally preferred for below 6 months and carrier post that