Are they two subordinate clauses?

Question

Consider the following sentence I got from github tutorial.

If you’ve made a change that you feel would benefit the community as a whole, you should definitely consider contributing back.

The part that I cannot classify their grammatical position:

you’ve made a change that you feel would benefit the community

My atttempt

• you have made a change
• the change that I feel
• the change that would benefit the community

It looks like there are two subordinate clauses here. It is grammatical?

Edit

I don't 100% understand the available answer actually.

I am trying to create another sentence with the same pattern as follows.

• He discovered a small island.
• The island that we live.
• The island that is located in South-East Asia.

So combining all of them becomes

He discovered a small island that we live (is) located in South-East Asia.

Is (is) probably optional?

Answer 1

If you’ve [made a change [that you feel [would [benefit the community …]]]]

I’ve bracketed the subordinate clauses. There are four in all.

The understood subject of "made" is "you", and of "would" and "benefit" is "a change".