Nonlinear Second Order ODE: Minimum Relaxation (smallest possible modification)

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Consider the following nonlinear second order ordinary differential equation:

$$\ddot y + p(t,y)\dot y + q(t,y)y = 0 $$

Is the above equation autonomous? I would say no, due to the dependence on t

Is the above equation homogeneous? I would say yes, due to the RHS

Suppose two functions $y = \phi _1(t) $ and $ y = \phi _2(t) $ solve the ODE individually. Is $y = a_1\phi _1(t) + a_2\phi _2(t) $ where $a_1$ and $a_2$ are scalar constants, also a solution? I would say no based on the principle of superposition

Now here is my question:

Write the minimum relaxation (smallest possible modification) to the ODE such that $y = a_1\phi _t(t)$ is also a solution of the relaxed form.

Isn't the above a trick question? The solution is simply multiplying a given solution by a constant and the original ODE is homogeneous

Any clarification would be greatly appreciated!