Provide a full phase plane analysis for the model

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Provide a full phase plane analysis for the model:

$\left\{\begin{array}{l} \epsilon\dfrac{dx}{dt}=-(x^3-Tx+b)\;,\;T>0\\\dfrac{db}{dt}=x-x_0\end{array} \right.$

So I'm trying to find critical points which turned out to be $(x,b)=(x_0,Tx_0-x_0^3)$ for me, next I found the Jacobian matrix (partial derivatives) and then eigenvalues: $\lambda_1=\frac12(T-3x_0^2-\sqrt{(T-3x_0^2)^2-4}\;)$ ; $\lambda_1=\frac12(T-3x_0^2+\sqrt{(T-3x_0^2)^2-4}\;)$

Now I'm not sure what to do next, how am I supposed to sketch a phase plane, while I have $2$ constants $T>0$ and $x_0$ (of course $\epsilon$ is also a small positive constant).

Also what does it mean to provide a full analysis of the phase plane? Is it just equilibrium points?

Any help will be much appreciated.

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Some helping tips.

Regarding the equilibrium point, analyzing the eigenvalues we have that

$$ (T-3x_0^2)^2-4 \ge 0 $$

define real eigenvalues. This region is shown in the attached figure. In light blue where the eigenvectors are real positive and in light red where real negative . The white region is for complex eigenvalues.

enter image description here

Also is shown a stream plot for $x_0 = 0, T = 1, \epsilon = 0.2$ where can be observed a limit cycle around the origin.

enter image description here