You are more than good enough, and motivated enough. You will cope with the workload. However, if you get ill again and you’re temporarily not up to continuing, then you defer some until you’re up to doing more - the world won’t fall apart because you have to renegotiate some modules and you won’t be the first student who’s had to pause their studies ......
Oh, and for the record, I left home at 19 so you could say I’ve had to adult for 26 years and I still find it tough
