Keep the upkeep. Change the keeper.

// Your contract keeps its Automation interface
function checkUpkeep(bytes calldata checkData)
    external view returns (bool upkeepNeeded, bytes memory performData)
{
    upkeepNeeded = block.timestamp - lastRun > interval;
    performData = checkData;
}

function performUpkeep(bytes calldata performData) external {
    require(block.timestamp - lastRun > interval, "too early");
    lastRun = block.timestamp;
    // your work here
}

import { defineTask, z } from '@thyme-labs/sdk'
import { encodeFunctionData, parseAbi, type Hex } from 'viem'

const abi = parseAbi([
  'function checkUpkeep(bytes) view returns (bool, bytes)',
  'function performUpkeep(bytes)',
])

export default defineTask({
  schema: z.object({
    upkeep: z.address(),
    checkData: z.string().default('0x'),
  }),
  async run(ctx) {
    const [upkeepNeeded, performData] = await ctx.client.readContract({
      address: ctx.args.upkeep,
      abi,
      functionName: 'checkUpkeep',
      args: [ctx.args.checkData as Hex],
    })
    if (!upkeepNeeded) {
      return { canExec: false, message: 'checkUpkeep returned false' }
    }

    return {
      canExec: true,
      calls: [{
        to: ctx.args.upkeep,
        data: encodeFunctionData({
          abi,
          functionName: 'performUpkeep',
          args: [performData],
        }),
      }],
    }
  },
})