是的，aiogram中存在register_next_step_handler函数，该函数用于注册下一步信息处理程序。以下是一个代码示例：

from aiogram.dispatcher import FSMContext
from aiogram.dispatcher.filters.state import State, StatesGroup
from aiogram.types import Message
from aiogram import Bot, Dispatcher, types
from aiogram.types import ReplyKeyboardMarkup, ReplyKeyboardRemove, KeyboardButton

bot = Bot(token='TOKEN_HERE')
dp = Dispatcher(bot)

class Form(StatesGroup):
    name = State()
    age = State()
    gender = State()

@dp.message_handler(commands='start')
async def process_start_command(message: Message):
    await message.reply("Hi there! What's your name?")
    await Form.name.set()

async def process_name(message: Message):
    async with state.proxy() as data:
        data['name'] = message.text

    await message.reply("How old are you?")
    await Form.next()

async def process_age(message: Message):
    async with state.proxy() as data:
        data['age'] = message.text

    # Remove keyboard
    markup = ReplyKeyboardRemove()

    # And send message
    await bot.send_message(
        message.chat.id,
        "What is your gender?",
        reply_markup=markup
    )

    # Next step
    await Form.next()

async def process_gender(message: Message):
    async with state.proxy() as data:
        data['gender'] = message.text

        # Do something with the collected data
        await message.reply("Thank you for helping us to improve!")

        # Finish conversation
        await state.finish()

# Register state handlers
dp.register_message_handler(process_name, state=Form.name)
dp.register_message_handler(process_age, state=Form.age)
dp.register_message_handler(process_gender, state=Form.gender)

# Register next_step_handler
dp.register_message_handler(process_name, commands='help', state='*')
dp.register_message_handler(process_age, state=Form.name)
dp.register_message_handler(process_gender, state=Form.age)