If you're replying to someone, please make it clear which part of it you respond.
You're stuck at the same difficulty level for 2 weeks, so thinking you can catch up really fast is not possible.
Alright, let's take the following scenario:
Bitcoin's chain: 700,000 blocks height and difficulty adjustment occurs.
Your chain: 650,000 blocks height with twice work of Bitcoin's chain.
You're the one who decides the timestamps between the blocks, so you could leave 20 minutes between each block. That would drop the difficulty by 50%. So now you've just made it easier to mine the rest 50,000 blocks. You could redo this in every period and you'll reach the 700,000 soon.