I may be in over my head

I don't know if I can finish 4 of these by June! The pattern is really not that hard, once I figured it out! But I keep having problems! I keep losing stitches and then gaining stitches, and then there was a harrowing 15 minutes when I couldn't figure out what I did, and I couldn't figure out how to fix it.....and I really don't know how I fixed it. Whew! This is work! But it's really pretty. This is 2 repeats. I'm learning a lot too....I learned K2T and SSK and maybe a little patience too!