2 Smallcap fund you are holding. Holding 1 smallcap is enough. The rest money you can invest in other funds like large cap or multicap
U can buy stocks worth Rs. 15k then stock holdings can proves as income proof since you have no bank statement. I gave the best option
Personal choice hai bhai, stock market ek kuwa hai, jo dubki marega wo dub jayega, jo terna ayega wo bach jayega