I read here i think that there is a slow release fertilizer brick i can plant when i transfer the plant into a bigger pot .. as im doing soon i have 2 trees i need to do this with or they may die soon .. does anyone have a link i can buy them from ? Tammy

Fertilizer bricks or sticks are not recommended using.
As I understand it, the fertilizer is concentrated to a small area and it might just overfertilize that area and becomes toxic. Not equally distributed throughout.

Agree with Benny there. Most fertilizer sticks are bad, though there are some pricey ones that are very good, and usually they are inside a porous tube that you insert in ther ground, and of course what is inside those tubes are like osmocote or multicote slow release fertilizers, only much more expensive.

The cheapo fertilizer sticks are really bad, they are good for controlling slugs after you kill your plants with these sticks.