Dear Kim,
I have checked. Please do the following pujas:

• Medicine Buddha puja: five times
• The long version of Medicine Buddha puja

It is best if these pujas are done at Kopan Monastery and Nunnery.

Also, please make:

• 100,000 tsa-tsas of the three Buddhas: Manjushri, Chenrezig, and Vajrapani
• 300,000 tsa-tsas of Lama Tsongkhapa

If you and your family can’t manage all of them, request Kopan Nunnery to help with doing some. You can make an offering to the nunnery.

Also, you need to ask the Kopan Nunnery to recite the Prajnaparamita for your brother.

I send my love and prayers, and hope to meet you soon.