Recurring investments for long term for child

Investor summaryNeutral

User seeks feedback on a long-term DCA strategy for a child, mixing leveraged ETFs (TQQQ, SSO) with index ETFs (QQQ, SPY).

Bull points

Long-term DCA into broad index ETFs ensures capital preservation and market-matching returns.
Small allocations to leveraged ETFs offer asymmetric upside potential without risking the entire portfolio.

Bear points

Leveraged ETFs suffer from volatility decay, making them highly risky for a 15-year buy-and-hold strategy.
Mixing leveraged and unleveraged ETFs without a clear rebalancing plan can lead to unintended risk exposure.

TQQQ SSO QQQ SPY

Post body

I am planning to make below investments for child's custodial account for long term on fidelity.

25$ per week in TQQQ

20$ per week in SSO

50$ per week in QQQ

50$ per week in SPY

My understanding is in the long term my first two investments are risky and in worst case i can lose all of that money.

However the next two investments will never become zero so i will have something in account 15 years from now. I am not planning on making any changes to these numbers in future .