Mid & Small Cap index have unperformed in last six months. These Index have given negative returns from there peak after 31st Jan. Since Kotak Emerging Equity & Kotak Small cap fund are Mid & small cap category therefore the returns are less.
It is good that you are building up through SIPs and these help in averaging out the purchase cost. Currently it is good time to build corpus as the mid cap & small cap stocks have corrected and in long term these would help in providing very good returns in future.