There is a modified method proved efficiently https://bmcbiotechnol.biomedcentral.com/articles/10.1186/1472-6750-8-91. You can delete/insert whatever you want easily.

You may look for the Q5® Site-Directed Mutagenesis Kit by NEB. It is perfect for deletions of any size.

We have successfully used the standard Quikchange II SDM kit to delete (and replace) about 30 residues (6xHis + linkers). You can do everything pretty much identically, just need to sequence more colonies as it has a lower success rate. Also, you will want to monitor the GC content of your primers more closely to avoid possible secondary structure forming in the longer primers.