The same trick that worked for your first pull-up, applied to dips. You jump or step to the top of the parallel bars, lock your arms out in support, and lower yourself as slowly as possible, ideally 4-5 seconds or more. You skip the concentric (the push back up) entirely and focus on the eccentric, where the strength is built.
Eccentric training works because your muscles can produce roughly 20-30% more force lowering than they can lifting. That means you can build true dip strength long before you can press out of the bottom. Most people who grind through a disciplined negative program are doing full dips within 3-6 weeks.
You should already be comfortable on the parallel bars from your band-assisted dip work before stepping up to negatives.
How to do it
Step or jump onto the parallel bars into a support position with your arms locked straight. Brace your core, lean slightly forward, and bend your elbows to lower yourself as slowly as you can, ideally 4-5 seconds or more. Go all the way down until your shoulders are at or below elbow height. Step back up to the top and repeat. Don't try to press back up under your own power yet.
More infomration here:
Source: BARNATURALS · EXERCISE DEMO: NEGATIVE DIPS (CHEST / SHOULDERS / CORE)
Target
- Sets: 3
- Reps: 10
- Rest: 90 seconds between sets
- Advance when: 3×10 with a 5-second descent and clean form
Key tips
- Use a box or low platform to step to the top. Don't waste energy jumping
- Count "one thousand one, one thousand two…" to 5 minimum on the way down
- Stay engaged the whole way down. If you start falling fast, you're done for that set
- Keep your elbows tracking back, not flared wide
- Once 3x10 at 5-second descent is clean, try a full dip. You're probably there