How to support overly busy boyfriend but still have my needs met at the same time?

My boyfriend is super busy and is stressed out about work. He barely has time for me and when we meet (for like 1-2 hours max, twice a week) he mostly just complains about work. I feel neglected but I want to remain supportive yet I still feel like I’m entitled to demand that he spares some time to nurture our relationship. How can I still be supportive but without completely disregarding my needs (for quality time with him, attention, etc)?
How to support overly busy boyfriend but still have my needs met at the same time?
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