Solids already???

My ped suggested we start trying runny oatmeal at LO 4 month checkup. It is NOT going well. She said 1tsp in 1oz of formula.

Day 1-tried 1oz as she said...gave up after a few spoons of screaming in 30 minutes.

Day 2-cut to 0.5oz with same ratio. Same result but less wasted formula.

Day 3??? Should we even bother or just wait a week before trying again? Any suggestions for thicker, runnier, special spoon? It had him so upset he didn’t even want his bottle after. We’d started with the bottle and switched to spoon halfway through to help ensure he wasn’t starving but would be hungry enough to be interested in the spoon.