When you have the base of the wall uncovered you might have to fill each of those drainage holes with dry concrete mix with small aggregate to support the blocks on top.
How to reinforce existing concrete block wall.
Fill the internal space of the block wall with concrete pouring from the bucket.
How to reinforce a hollow concrete block wall step 1.
And drill weep holes through the joints in the wall on the outside.
The new steel reinforcement is made into a mesh of horizontal and vertical bars which is then anchored to the wall foundation.
This thin steel once embedded in the mortar adds significant strength to long concrete block walls.
I recommend you break out the interior faces of the block at cores to be reinforced and install reinforcing from the inside.
Lay a run of masonry lathe down the entire course of the wall.
This unique product is placed on top of a row of block in the horizontal mortar joints.
Horizontal reinforcement helps to evenly.
This increase in dimension is achieved by adding new concrete to the existing concrete wall.
Keep filling voids with concrete until level with the top of each block using the cement trowel to level the concrete.
When breaking out the face shells be careful not to damage the bed joint reinforcement.
If you can talk to the guy who built the wall and ask him if he would do some remediation.
You can also used thin wire reinforcing for concrete block walls.
Pour concrete from the bucket into the cinder block voids.
This must remain in place as it is needed to tie the wall together to control shrinkage.
Tie backs also called dead man anchors should be installed to tie the wall into soil well behind the wall.
For this additional steel reinforcement is placed to increase the strength and ductility of the r c wall.