This is a realistic response for me, sadly. I thought the pandemic would lead to an online learning and book reading renaissance, but it hasn’t. I’ve done more, but not as much as I imagined. I think it’s important to realize that it’s not just the lack of free time or the allocation of free time elsewhere that prevents self-enrichment. I think discipline is needed. Still learning that.
To answer OP: I’m taking Udemy courses that are laterally related to what I do (look up t-shaped learning). And I try to read 1-2 books per month.
Go easy on yourself. Remember when you were in school? Could you sit around all day learning then without breaks for socialization, relaxing, stuff like that? No. Most people can't. It's not just about discipline. It's mental health. Quarantine took things like socialization, escape from their homes, and physical contact from many people. And you don't function as well without that. It's actually going to make it harder for most people to do things like take classes, because they're not at full health. And you can't replace socialization with classes for your mental health any more than you can replace vitamins with proteins for your physical health.
Not saying discipline isn't great, but shaming yourself for lack of discipline without looking clearly at the various factors can often just be some form of self destruction or self loathing trying to backdoor its way into your psyche.