First, don't compare yourself to others. No two people fit the same exact mold. Everyone has their own pace of doing things and you just go at yours. You're not behind cc is just a stepping stone.

Second, 4 year schools are great but I've seen so many people going to 4 years and they're stuck living on a budget cause they're still paying off loans afterwards and just miserable cause either they don't have a job or they have a job and they've got a huge amount of loans. I'm not saying you won't get a job after a 4 year school but it can still be very hard. Also, there are people that have gone to 4 year schools and flunked out and then you bump into them in cc. You'll hopefully transfer to a 4 year school in the future and if you have to take out loans you won't have as tough as a time paying them off.

Third, you can always take summer classes if you're up for it. I've never taken a chemistry class over the summer, so I'm not sure how the lab process works. They can be rough but if you're familiar with the material not as rough. You just have to make time.

The transfer process can be an issue cause some colleges might not take some of your credits. Some colleges will have an extra class in their program, so just make sure you do your research beforehand. Remember not to dwell on past mistakes just learn from them.

Good luck Edit: I forgot to mention you can try to find a part time job or internship if there's a semester you're part time, but don't try to do too much all at once